The document promised investors a return of 48,000 percent. That was the pitch in 1928, when a Swiss adventurer named Edgar Sanders sold shares in a company built around a single rumor: that somewhere in the steep, forested gorges above the Sacambaya River, Jesuit priests had buried a fortune in gold before they were expelled from Bolivia in the eighteenth century. Sanders arrived with two hundred tons of equipment, twenty men, gas masks for the legendary poison vapors, and even kite-mounted cameras for aerial reconnaissance. After months of hacking a vast hole into the mountainside, he found nothing. He was not the first to fail here, and he would not be the last.
The story is always told the same way. Before the Jesuits were forced out of the region in 1767, they hid their accumulated wealth on a steep hill cloaked in dense forest, somewhere above the Sacambaya. The hiding place was marked, the tale says, by an egg-shaped stone. Beneath the hill lay a cavern that five hundred laborers had taken two and a half years to dig, and the treasure was protected by a poison strong enough to kill a regiment. Like all good treasure legends, it carried a curse and a body count built in. The Sacambaya itself is a real river in the La Paz Department, running through some of the most rugged and isolated terrain in Bolivia, the kind of country where a story like this can survive precisely because so few people can reach the place to disprove it.
Cecil Prodgers came to the legend as a veteran of the Boer War. He said the family of an elderly Jesuit priest had given him the document describing the hoard, and in 1905 he set out to dig. The rainy season stopped him. He came back in 1906 with dynamite, and this time the mountain stopped him a different way. Working the rock released a powerful smell that drove off his laborers and sickened Prodgers himself, his fingernails reportedly turning blue from the fumes. He abandoned the dig and went home to write a book, Adventures in Bolivia. Whether the vapor was the fabled Jesuit poison or simply gas from disturbed ground, it became part of the legend, and the legend kept growing.
Prodgers passed his document to Edgar Sanders, and the legend consumed him. After two failed attempts in 1925 and 1926, Sanders teamed up with Alan Hillgarth, a British intelligence officer and adventure novelist, to launch the Sacambaya Exploration Company in 1928. The treasure hunters were not the only ones who suffered for the dream. Sanders claimed to have found hundreds of human skulls near a former Jesuit settlement called Inquisivi, said by local people to belong to enslaved Indigenous laborers who had dug the tunnels and were then killed so the secret would die with them. True or not, the detail is a grim reminder that beneath the romance of buried gold lies the reality of forced labor that built so much of colonial South America. The men who carried that gold, if it ever existed, were not the ones who got to keep it.
The pattern repeated for decades. In the 1960s, Mark Howell and Tony Morrison brought field-distortion locating equipment, a kind of metal detector, and found only a single trapezoidal copper plate, probably left behind by Sanders. Then the rains came, as they always do, and they too packed up and left. Television treasure-hunting crews have since come and gone. No verified Jesuit gold has ever emerged from the Sacambaya. Perhaps it was never there. Perhaps the document was a forgery passed from one hopeful believer to the next. What the river offers instead is something stranger and more durable than treasure: a story that has outlived everyone who chased it, written into a green wall of mountains that has so far refused to give up its answer.
The Sacambaya River lies in the Inquisivi region of Bolivia's La Paz Department, at roughly 16.83 degrees south, 66.82 degrees west, in the rugged transition zone between the high Andes and the Yungas valleys. From the air this is a maze of steep, forested ridges and deep river gorges; the Sacambaya threads through them as a thin silver line, often shadowed by canyon walls. There are no nearby major airports in this isolated terrain. The closest international gateway is La Paz-El Alto (ICAO SLLP), roughly 130 km to the northwest and itself the highest international airport in the world at about 4,061 meters. Plan for high terrain and rapidly changing mountain weather; afternoon cloud build-up over the ridges is routine, and clear views are best in the early morning.