El Arete Libre (5.10a / 6a) · deep water solo
Me sostengo de los muertos de hace 15 millones de años
Held Up by the 15-Million-Year-Old Dead
Personal essay film · 17 min
Premieres on · October 21, 2026
Synopsis
A Puerto Rican climber goes up a wall ropeless, over the sea, a few steps from Arecibo’s Taíno cave — just as the reserve enters a new stage.
Ropeless climbing, Taíno cosmology and deep time. It opens with a hand on an edge of rock and a promise the narrator made himself: that the name of this coast held a meaning. He checks it, and it doesn’t hold.
What’s left is the stone — the faces carved more than five hundred years ago, the Ice Age dune turned to rock and, beneath everything, the warm sea of the Miocene — and a voice that insists none of this matters.
The film takes no position on any legal or legislative process. It invites you to look at the karst — the limestone that covers close to 27 % of the island — as something more than a resource.
Act I · The voice in the karst
Any decent climber does this as a warm-up.
If I fall on this stretch, I won’t die — but I’ll sure as hell wreck my life.
Three voices · Spanish
Lo que tengo en la mano son los muertos rehechos. Piedras más jóvenes que las criaturas que las componen.
What I’m holding is the dead, remade. Stones younger than the creatures they’re made of.
Three voices · English
“Sentimental about sediment. It sank without a reason — and so will you.”
Sentimental con el sedimento. Se hundió sin razón —y tú también.
Three voices · Japanese
karada o oikomi, tamashii o migaku. sore koso ga shugyō da.
You push the body to its limit and polish the soul. That is shugyō.
体を追い込み、魂を磨く。それこそが修行だ。
Arasibo
The name
Arasibo, the cacique. Arecibo takes its name from him. That’s what he was told.
Reading: vn muy buen c·a·ç·i·q·u·e
Reading: franco yamayca A·r·e·ç·a·b·o
Reading: franco yamayta a·r·a·ç·i·b·o
The ç is the cedilla of 16th-century Castilian and sounded like an s: “Araçibo” reads “Arasibo.” No scribe ever wrote it the same way twice. The spelling with an s was fixed by Coll y Toste in 1907, in his Prehistoria de Puerto Rico; in 1891, in his Crónicas de Arecibo, he himself still wrote “Aracibo.”
Archivo General de Indias, Patronato, 175, R.1 · Image source: Ministry of Culture (Spain) — PARES.
Beneath
The Taíno, with their thousands of years, are newcomers here.
Today
El Arete Libre, 5.10a. No rope, the Atlantic below.
A crew of three and some friends. The first moves are the dangerous ones: down there it’s still rock, not sea. Above pulls; below swallows.
The hand on the rock; the hand on the paper. Marcela M. Zegrí Hernández painting “El Arete Libre” from the shore. Film stills. More than 500 years ago
Faces carved into the rock of the cave.
The cemíes in the stone and the opías — the dead — coming out at night to eat guava. At dusk, bats come out of the cracks. They really do.
Of an entire language, some two hundred words remain, six sentences. They had a whole world.
What was put on the stone: a name scratched last week, on the wall of the cave. Film still. End of the Ice Age · what you touch
A dune turned to rock.
The sea made sand out of its own dead — shells, corals, algae — the wind piled it up and water glued it back into stone. What he holds in his hand is the dead, remade. And the same sea, down there, is eating it back, grain by grain.
The same sea, down there, eating it back. Film still. 
Key · what the colors mean
-
Beach deposits
Recent — carbonate sand: ground shells and marine skeletons, plus grains the sea tears off the cemented dunes -
Beach rock
Recent — beach sand cemented by calcite -
Dune sand
Recent — loose sand, same as the beach beside it -
Transitional deposits
Recent — dune and beach sand the wind spreads, in thin veneers, over everything else -
Swamp deposits
Recent — black or gray clay, waterlogged -
Lagoonal deposits
Pleistocene — old lagoon and swamp bottoms, near sea level -
Cemented dunes — eolianite
Pleistocene — the wall being climbed -
Blanket deposits
Miocene to Recent — sand and clay stranded on the limestone as water dissolved it -
Camuy Limestone
Miocene — the old stone, beside and beneath the wall - Structure contours — underground elevation of the top of the Aguada Limestone; “?” where probable
- Section A–A′ — the line of the sheet’s geologic cross section
- 4CPR — test well: where the limestone’s thickness (171 m) comes from
The film’s coast on the 1968 geologic map: Punta Las Tunas and Islote, next to Cueva del Indio. Each color is a different rock and a different age; the film’s two are marked. USGS I-551 (Briggs, 1968), scale 1:20,000, public domain. -
Beach deposits
Miocene · what holds
A warm turquoise sea, a coral shallow behind the reef.
Four million years of sea piling up limestone, and by the end not one river to cloud it. The island — old volcanoes, already worn down — was low land, no mountains yet. Creatures no one will ever name fell to the bottom, layer upon layer, and became the stone that holds up the whole coast.
The sea had a king: the megalodon — eighteen meters, three times a great white. Its teeth still turn up in the karst.
The same sea, today. Film still. 
Megalodon teeth from the northern karst: one found in southern Isabela (left) and another in Moca, still inside the limestone (right). Photos: Weather News P.R. (2020). In February 1992, during excavations by the Isabela municipal landfill, eight teeth turned up embedded in the Aymamón Limestone — middle Miocene, ~16 to ~11 million years ago; the largest about 96 mm tall (Nieves-Rivera, Ruiz-Yantín & Gottfried, 2003).
There are no opías in this stone. No gods to hear me. And still, when I climb, I hold on to life made rock. And beneath it, holding it up, the dead of fifteen million years ago.
Act IV · The crux
The hand closes on the hold. Up. The whole sea below.
Credits
- Sebastián Amaral
- Diego Vázquez Torres
- Marcela M. Zegrí Hernández
- Bryant Huffman — coach
- Yuyu — climbing partner
- Joaquín José Acevedo — climber
- Sebastián Bosques — climber
- John Campis — climber
- Nilsa — climber
- Jesús J. Pérez Carballo
- Richard B. Kaufman López
- Bryant Huffman and El Bloque
- for the access and for the day, and for all the training that made it possible to even attempt this climb
- Sebastián Amaral
- for guiding, and for the rope out of the water
- Zulynes Avilés
- for the house
- Jesús J. Pérez Carballomy dad
- for filming my childhood and for throwing my birthday at the Time Out arcade
- Weipeng Zhuo
- for covering the days I took off work
- Manuel Pérez CaroRichard B. Kaufman LópezVivian Pérez IrizarryCarlos Ramírez
- for reading the script
- Licensed via Epidemic Sound
- Archivo General de Indias, Patronato, 175, R.1 · Ministry of Culture (Spain) — PARES · Geologic map I-551, USGS (Briggs, 1968)
If you got this far, you know what this is. When there’s another wall, or the next film, I’ll write.
After the credits · the papers
And this time I checked.
The name · letter by letter
Five centuries of spelling it, and never the same way twice.
1515 · March 13
Areçabo
Francisco yamayca Areçabo
1521 · December 7
Araçibo
Francisco yamayta araçibo
1854
Aracibo
Francisco Jamayca Aracibo
1866
Aracibo
Francisco Jamayca Aracibo
1889
Areziba
Areziba
1891
Aracibo
el cacique Aracibo
1894
Arazibo
Francisco Jamaica Arazibo
1907
Arasibo
Arasibo
«Preferimos escribir siba con s, porque el boriqueño no ceceaba»1515 · March 13
Order by Sancho Velázquez, distributor of Indians · Archivo General de Indias, Patronato 175, R.1, f.2r, line 25
«çient personas en el caçique Francisco yamayca Areçabo»
The first time anyone writes the name. A distributor of Indians, handing him over with a hundred people to the deputy of a king’s secretary. With an e, a ç, an a.
1521 · December 7
Notarial copy of the sister order (the two-hundred one) · same file, f.5v, line 1
«el caçique Francisco yamayta araçibo con dozientas personas»
Six years later another scribe copies the sister order and already spells it differently: an a, an i, and a cedilla you can actually see this time. This is the copy that will reach the printing press.
1854
Alejandro Tapia y Rivera, Biblioteca histórica de Puerto-Rico, p. 347
«el cacique Francisco Jamayca Aracibo con doscientas personas»
Three hundred years in the king’s archives. Tapia prints it for the first time and the ç becomes a c: the press had no patience for cedillas.
1866
José Julián Acosta, notes to Abbad y Lasierra’s Historia, pp. 93–94
«el Cacique Francisco Jamayca Aracibo con 200 personas de sus indios»
Acosta reprints it in his notes and, in his own note, already writes “Jamaica” plainly. This is where Brau will read it.
1889
Agustín Stahl, Los indios borinqueños, p. 67
«Areziba, cuyo distrito se hallaba en la demarcación que hoy ocupa la villa de Arecibo»
Stahl makes him lord of a district — with a z, ending in a — and places him in the fighting, under Guaybana. No chronicler saw him there.
1891
Cayetano Coll y Toste, Crónicas de Arecibo
«encomiendan á su secretario Lope Conchillos el cacique Aracibo con doscientos indios y naborías»
Coll y Toste, who is from Arecibo, still spells it like Tapia: with a c. The s will reach him sixteen years later.
1894
Salvador Brau, Puerto Rico y su historia: investigaciones críticas, p. 144
«el cacique Francisco Jamaica Arazibo… sonando junto á éste el de Jamaica, nombre correspondiente á la isla»
Brau spells it with a z and reads the other name: Jamaica. He suspects the man was not from here — an Indian brought from another island — and that “cacique” meant foreman. He is the historian the film speaks of.
1907
Cayetano Coll y Toste, Prehistoria de Puerto Rico, vocabulary
The s is from 1907. Coll y Toste put it there on purpose, and that is the form that reached the town’s coat of arms: the crown, the municipality explains, is that of “Cacique Francisco Xalamanca Arasibo.”
The s is from 1907; the i, from 1521; the e, from 1515. No scribe ever wrote it the same way twice.
Archivo General de Indias (PARES) · Tapia 1854 · Acosta 1866 · Stahl 1889 · Coll y Toste 1891 and 1907 · Brau 1894 · Wikipedia history · Wayback Machine. Every witness, with its source →
The language · six sentences
Of an entire language, what someone stopped to write down.
1 · In a tale
Ahiacauo Guarocoel
Let us know this grandfather of ours
2 · Dying
Dios naboría daca
I am God’s servant
3 · Finding gold for someone else
Ó cama guaxeri guariquen caona yari
Listen, sir: look, come see the jewel of gold
4 · With his hands cut open
Mayanimacaná, Juan Desquivel daca
Don’t kill me, because I am Juan de Esquivel
5 · Praying
Técheta cynato guamechyna
The Lord will be very angry
6 · Answering her
Guaibbá. Cynato machabuca guamechyna
Go away. What do I care if God gets angry?
150 of some two hundred · each with its page
six sentences
1 · In a tale · written down around 1498
Fray Ramón Pané, Relación acerca de las antigüedades de los indios, ch. XI
«Ahiacauo Guarocoel, che uuol dire, Conosciamo questo nostro auolo»
The four twins, sons of Itiba Cahubaba — the one who died in childbirth — fleeing from Yaya, when they reach Bayamanaco’s door and see he is carrying cassava bread. It is the only one of the six nobody said: it is from a tale told to a friar.
Pané, a Hieronymite hermit, wrote it down on Hispaniola around 1498, on Columbus’s orders. His Spanish is lost: what survives in full is Alfonso de Ulloa’s Italian translation, printed in Venice in 1571 inside the life of Columbus published by his son Ferdinand.
2 · Dying · written down around 1498
Fray Ramón Pané, Relación, ch. XXV · Bartolomé de las Casas, Apologética historia, ch. 167
«Dios naboría daca, Dios naboría daca», que quiere decir, en la lengua más común y más universal desta Isla, «yo soy sirviente y criado de Dios»
Guaticaba, of the house of Guanáoboconel, in Macorís. Baptized Juan Mateo on St. Matthew’s Day, 1496. Guarionex’s people killed him, with his brother Antón and one more, shouting this. Pané wrote that he died a martyr; Las Casas, on the same page where he copies it, that he did not: they were killed “because they lived with the Spaniards.”
Pané learned it from those who were present. The 1571 press left it as “Dio Aboriadacha”; Las Casas, who read the manuscript, wrote “Dios naboría daca” and took it apart: naboría, servant; daca, I.
3 · Finding gold for someone else · around 1502
Bartolomé de las Casas, Historia de las Indias, book II, ch. 3
«…y dícele: ó cama guaxeri guariquen caona yari. Ó cama, dice oyes, guaxeri, señor, guariquen, mira ó ven á ver, yari, el joyel ó piedra de oro; caona llamaban al oro.»
An Indian woman in a mining gang by the Haina river, on Hispaniola, to the Spanish miner — “the executioner who wouldn’t let them breathe” — as she dug up, poking the ground with a stick or an iron bar, the largest gold nugget anyone had seen. The governor took it for the king; it sank with the fleet in the hurricane of July 1502. As for her, Las Casas writes — he saw the nugget, not the woman — “I hope they gave her a single bite of the pig.”
Las Casas wrote it between 1527 and 1561 and glossed it word by word: ó cama, listen; guaxeri, sir; guariquen, look or come see; yari, the jewel; caona, gold. The book was not printed until 1875.
4 · With his hands cut open · 1504
Bartolomé de las Casas, Historia de las Indias, book II, ch. 18
«Díjole Cotubanamá: mayanimacaná, Juan Desquivel daca; “no me mates, porque yo soy Juan de Esquivel.”»
Cotubanamá, cacique of Higüey, on Saona island, both hands just cut open by Juan López’s sword. He and Captain Juan de Esquivel had exchanged names — guatiao — and he believed the name would save him. They hanged him in Santo Domingo.
On Saona only Juan López was there; he told it. Las Casas, who had arrived on the island in 1502 and was in that war, wrote it as one word, mayanimacaná; splitting it into mayani and macaná is today’s linguists’ doing. It is the only one of the six said in a war.
5 · Praying · printed in 1516
Peter Martyr d’Anghiera, Decades of the New World, decade III, book 8
«Teitoca teitoca, que significa: Estate quieto; Técheta cynato guamechyna, que significa: se irritará mucho el Señor. Guamechyna es Señor; Técheta, mucho; cynato, irritado.» (transl. Torres Asensio, 1892)
A cacique’s wife, praying in the chapel the Christians had built on his land, by the salt lake of Hispaniola, when her husband demanded “the marital debt” right there. Before that she had told him Teitoca teitoca: be still.
Martyr never crossed the ocean: he heard it at court, from those who came back, and it came out in Latin in Alcalá in 1516, with the gloss: guamechyna is Lord; técheta, much; cynato, angry.
6 · Answering her · printed in 1516
Peter Martyr d’Anghiera, Decades of the New World, decade III, book 8
«El marido dijo braceando: Guaibbá, esto es, vete; Cynato machabuca guamechyna, que se traduce: ¿Qué me importa á mí que Dios se irrite?» (transl. Torres Asensio, 1892)
The cacique, to his wife, “waving his arms.” He forced her there. Martyr says he was struck dumb and half lost the use of his arm on the spot, and swept the chapel himself for the rest of his life.
Martyr tells it as a miracle, in the Decade he dedicated to Pope Leo X. It is the last of the six, and the only one that answers another.
Two hundred and some
What a chronicler stopped to write down
Granberry and Vescelius, who gathered everything there is, count over two hundred Classic Taíno forms — nearly all names of plants, animals, ranks and people — half a dozen full sentences, and a thousand place names.
Here are 150, each on a chronicler’s page — Columbus in his log, Pané, Martyr, Oviedo, Las Casas — spelled as he spelled it (Pané’s, as Arrom read them), in the singular, and almost always with what he said it meant. Almost all are things you could point at.
And six sentences
None of them was said calmly
One finding gold for someone else. One with his hands cut open. One dying. Two arguing in a chapel. And one in a tale.
Of an entire language, some two hundred words remain. Six sentences.
Pané c. 1498 (Ulloa 1571) · Martyr 1516 (1892 transl.) · Las Casas 1527–61 (1875–76 ed.) · Columbus 1492–93 · Oviedo 1526–35 · Granberry & Vescelius 2004. Every sentence, with its page →
The rock · anatomy of the wall
What he holds in his hand is an Ice Age dune. What holds it up is seventeen hundred meters of old sea.
The column: well 4CPR (Kewanee Interamerican Oil Co.; Briggs 1961), drawn to scale, depth in meters. Its clocks — Quaternary: the last 2.6 million years · Miocene: 23–5 · Oligocene: 34–23 · Eocene: 56–34 million years.
Kaye, Shoreline features and Quaternary shoreline changes, Puerto Rico, USGS PP 317-B (1959) · Briggs, Geologic map of the Arecibo quadrangle, USGS I-551 (1968) · Monroe, Geology of the middle Tertiary formations of Puerto Rico, USGS PP 953 (1980), with Briggs’s (1961) well 4CPR. Every claim, with its source →
01 · The wall
A dune turned to stone.
Eolianite: wind-blown sand, glued with lime. The tilted layers at the top left are laminae of the dune — the flank that faced the sea — falling toward it. The pits are rain dissolving it hole by hole, and the salt the spray leaves behind, loosening grains as it dries. In 1959 a USGS geologist wrote of this ridge that “the whole ridge trembles whenever a large wave strikes it.”
The sentence, on its page. Clifford A. Kaye, Shoreline features and Quaternary shoreline changes, Puerto Rico, USGS Professional Paper 317-B (1959), p. 95: Punta Las Tunas — the ridge of Cueva del Indio — as an example of a dune undermined by the sea. Public domain (USGS). 02 · What it is made of
Shells, corals, algae.
Almost every grain was once alive: bits of shell, of coral, plates of calcareous algae, foraminifera. There is quartz, but little. What holds them together is calcite: the same lime as the grains, dissolved by rain and recrystallized between them. And one clue that this was a dune and not a seabed: inside there are almost no marine fossils — the few that turn up are land snails.
03 · How it formed
The shore was somewhere else.
In the Ice Age the sea rose and fell with the glaciers, and the cemented dunes mark where the shore once was. Beside the beach of that time, the wind piled the sand into dunes: layer upon layer, the upper ones falling toward the sea. That is why the lines in the wall are tilted.
It rained.
The same water that opens pits outside glues inside: where it runs, it dissolves a little lime; where it dries, it leaves it between the grains as cement. Grain by grain, the dune became rock — the oldest ones tend to be the hardest. Why the lime crystallizes right there, the 1959 report admits it did not know.
And the sea came back.
It rose again and began eating it from below: it carries off the loose sand at the base, opens caves, knocks pieces down. What is left standing is the arête. El Arete Libre is a dune halfway to falling.
04 · What lies beneath
Seventeen hundred meters of old sea.
More than sixty years ago, less than a kilometer from the cave, an oil company drilled a test well: 1,684 meters of limestone and marl before touching the old volcanoes. They did not pull up a core: they pulled up cuttings, and between 122 and 171 meters they kept nothing. First the Camuy (the limestone beneath the dune, end of the Miocene, perhaps Pliocene); then the Aymamón, the coral shallow of the megalodon teeth; half a kilometer down, the Aguada: fifteen million years. And it goes on. This is what they brought up.
Where the figure comes from: Watson H. Monroe, Geology of the middle Tertiary formations of Puerto Rico, USGS Professional Paper 953 (1980), p. 8. The thickness of these rocks “has been determined only at an oil test well drilled on the coast between Arecibo and Barceloneta,” where Briggs (1961) counted 5,527 ft — 1,684 m — of sedimentary rock above Eocene (?) volcanics. Public domain (USGS). 
And where the well was, in the same report (p. 22): “drilled near the coast (130,830 E., 72,780 N., Arecibo quadrangle) about midway between Arecibo and Barceloneta.” That this lands some 500–700 m from the cave is what the “4CPR” symbol on Briggs’s 1968 map says, south of Punta Las Tunas.
The Miocene · the shoulders
With these shoulders. Mine.
Miocene · on the other side of the world
The planet belonged to the apes
More than fifty genera of apes between 23 and 5 million years ago, in Africa, Europe and Asia. Here, the ones Almécija and his team put in their figure, each with its stretch of time. None looked quite like today’s.
Past the dotted line it is no longer Miocene: it is the first of the human line — apes too — and the ones that remain. In the original figure each one is colored by who it is related to: eight colors, three of them say “or” and one says “unknown.” That is why there are no branches here.
Uganda · Bavaria · Catalonia · Tuscany
Some of them, starting to hang
Morotopithecus, some 21 million years ago, already had an ape’s shoulder socket. In Danuvius (12) and Hispanopithecus (10) the olecranon — the bony tip of the elbow — gets shorter; in Oreopithecus (7) it is already like any living ape’s. Like yours, in an ape that is not your grandfather: four animals from four places, none of them on your line.
Kibale and Taï · 2006–2022
What they measured in the chimpanzees
Fannin, Joy, Dominy, McGraw and DeSilva filmed wild chimpanzees in Kibale (Uganda) and mangabeys in Taï (Côte d’Ivoire) climbing up and down trees. In profile; on each frame, three points per joint; the shoulder, against the trunk of the tree. Twenty-three descents, thirty-nine ascents. Climbing down, the chimpanzee opens its shoulder 14 degrees more and straightens its elbow 34 degrees more than when climbing up. The monkey, hardly at all: 4 and 3.
Their reading: this loose shoulder isn’t only for hanging. It also brakes the way down. And it may, they say, have gone the other way around: made for hanging, and turned out good for coming down.
Today
Eight great apes remain
Four genera, eight species: three orangutans, two gorillas, two chimpanzees, and us. And the gibbons, which are apes but not great ones. The rest of the tree is fossil.
The planet belonged to the apes. Dozens of species, some of them starting to hang from the branches. With these shoulders. Mine. Today eight great apes remain.
Almécija et al. 2021 (Science, fig. 3) · Fannin et al. 2023 (R. Soc. Open Sci., 10: 230145) · Wikipedia, Hominidae. Every claim, with its source →
Press
Press kit.
Premiere: Wednesday, October 21, 2026, 12:00 PM (Puerto Rico time; 6:00 PM in Spain). Free, on YouTube.
Premiere, copy-ready texts, details and the questions you’ll want to ask, on a page of their own.
What’s next · the list
When there’s another wall, or the next film, I’ll write.
Climbing and film go together here: what I climb, what I shoot, and the papers I turn up along the way. A few times a year, only when there’s actually something.
Your address is kept by Kit, which sends the list. It isn’t sold or shared with anyone. One click to leave, at the bottom of any email.