Among the many theories surrounding the legendary Treasure of Lima, few are as enduring—or as visually compelling—as the idea that the treasure lies hidden near one of Cocos Island’s waterfalls. The island is famous for its lush rainforest, steep volcanic cliffs, and hundreds of cascading waterfalls that pour into the Pacific Ocean throughout the year.
For generations, treasure hunters have searched these dramatic landscapes, believing that Captain William Thompson chose a waterfall as the key landmark for hiding one of history’s greatest lost fortunes. While no definitive evidence has ever proven the theory, waterfalls continue to rank among the most frequently searched locations on the island.
Could the sound of rushing water have concealed the activities of Thompson’s crew? Did a waterfall provide the perfect landmark for returning to the treasure years later? Let’s examine why so many explorers believe the Treasure of Lima could still rest beside one of Cocos Island’s countless cascades.
Why Waterfalls Appear in So Many Treasure Legends
Throughout history, natural landmarks have played an important role in hidden treasure stories.
Unlike man-made markers that can disappear over time, waterfalls are relatively permanent features. Although their appearance may change slightly due to erosion, the water continues flowing year after year, making them reliable navigation points.
For sailors returning to an isolated island, a distinctive waterfall would be far easier to recognize than an individual tree or pile of stones.
If Captain Thompson intended to recover the Treasure of Lima later, using a waterfall as his primary landmark would have made practical sense.
Cocos Island Is Filled With Waterfalls
One reason the waterfall theory remains popular is the sheer number of waterfalls on Cocos Island.
The island receives more than 20 feet of rainfall annually, making it one of the wettest places in the eastern Pacific.
As rainwater flows down the island’s rugged volcanic peaks, it creates hundreds of streams and waterfalls ranging from small cascades to spectacular cliffs dropping directly into the ocean.
Some waterfalls are visible from offshore, while others remain hidden deep within the rainforest.
This abundance gives treasure hunters countless places to investigate.
Fresh Water Was Essential
Long before modern navigation, sailing ships depended on freshwater sources during long voyages.
After weeks at sea, crews desperately needed clean drinking water.
Waterfalls naturally feed streams and pools where sailors could refill barrels before continuing their journey.
If Captain Thompson landed on Cocos Island carrying stolen treasure, collecting fresh water would almost certainly have been one of his first priorities.
That practical necessity makes nearby waterfalls logical places to begin searching.
Natural Landmarks That Never Move
One challenge of hiding treasure is ensuring it can be found later.
Natural landmarks solve that problem.
Imagine trying to remember a buried cache using directions such as:
- Walk 300 feet north from the beach.
- Turn at the third tree.
- Dig beside a large rock.
After several years, trees die.
Storms move rocks.
Trails disappear.
A prominent waterfall, however, remains one of the island’s most recognizable features.
Even if surrounding vegetation changes, the waterfall continues flowing.
The Sound of Water Offers Concealment
One often-overlooked advantage of waterfalls is noise.
Moving heavy treasure chests through dense jungle would create considerable sound.
Workers chopping vegetation, moving rocks, and digging holes could easily attract attention.
The constant roar of a waterfall naturally masks these noises.
If another ship unexpectedly approached the island, nearby sailors might never hear the activity taking place deeper in the forest.
This acoustic cover makes waterfall locations especially attractive from a tactical perspective.
Soft Soil Makes Digging Easier
Volcanic terrain can be extremely difficult to excavate.
Fortunately for treasure hunters, areas surrounding streams and waterfalls often contain softer soil deposited over centuries by flowing water.
Compared with solid volcanic rock, these areas would require significantly less labor to dig.
Captain Thompson’s crew, already exhausted from their voyage, would likely have preferred ground that could be excavated quickly.
This practical consideration strengthens the waterfall theory.
Dense Vegetation Provides Excellent Cover
The rainforest surrounding Cocos Island’s waterfalls is among the densest on the island.
Towering trees, vines, ferns, mosses, and thick undergrowth create nearly impenetrable vegetation in many locations.
Within days of digging, disturbed soil could become partially concealed.
Within months, tropical plants might completely erase visible signs of excavation.
Over two centuries, countless layers of vegetation would make locating any buried treasure extraordinarily difficult.
Waterfalls and the Famous Treasure Maps
Many treasure maps associated with the Treasure of Lima mention features commonly interpreted as waterfalls or streams.
Descriptions often include references to:
- Cascading water
- Flowing rivers
- Twin falls
- Rocky pools
- Hidden valleys
- Stream crossings
Unfortunately, almost all surviving maps have questionable origins.
Some were likely created to attract financial backers for treasure expeditions.
Others may have been copied repeatedly, introducing errors over time.
Still, these recurring references have kept the waterfall theory alive for generations.
Which Waterfalls Receive the Most Attention?
Although Cocos Island contains hundreds of waterfalls, treasure hunters have traditionally focused on those closest to the island’s two primary anchorages.
These include waterfalls near:
- Wafer Bay
- Chatham Bay
- Coastal river valleys
- Accessible jungle trails
The reasoning is straightforward.
Captain Thompson would probably not have carried tons of treasure several miles into mountainous terrain if suitable hiding places existed much closer to shore.
The most likely waterfall locations are therefore those within a relatively short distance of the landing beaches.
The Challenges of Searching Waterfalls
Exploring waterfall regions on Cocos Island is extremely difficult.
Researchers encounter:
- Steep cliffs
- Flash floods
- Slippery rocks
- Dense jungle
- Heavy rainfall
- Deep ravines
- Limited visibility
Modern explorers often require climbing equipment simply to reach areas that may contain potential hiding places.
Even with drones and GPS technology, dense rainforest can obscure important geological features.
These obstacles explain why many waterfall locations remain only partially explored.
Could the Treasure Be Beneath a Landslide?
One fascinating variation of the waterfall theory suggests the treasure may no longer be accessible.
Waterfalls constantly reshape the surrounding landscape.
Over two centuries, erosion may have triggered landslides that buried the original hiding place beneath tons of soil and rock.
If this occurred, even searchers standing directly above the treasure would have little chance of recognizing its location without extensive excavation.
Because Cocos Island is now protected by Costa Rican law, such excavation is generally prohibited.
Modern Technology Meets Ancient Mystery
Today’s treasure hunters possess remarkable tools unavailable to earlier expeditions.
These include:
- LiDAR mapping
- Ground-penetrating radar
- Drone photography
- Geological surveys
- Digital terrain modeling
While these technologies have improved our understanding of Cocos Island, they have not solved the mystery.
Dense vegetation, volcanic geology, and environmental protections continue to limit exploration.
Ironically, the very features that preserve Cocos Island’s natural beauty may also be preserving its greatest treasure legend.
What Do Skeptics Say?
Not every historian believes the waterfall theory holds up.
Critics point out that areas near streams are prone to flooding, erosion, and shifting soil. If the treasure had been buried close to moving water, there is a possibility that some artifacts would have been exposed over the years.
Others argue that Captain Thompson, if he truly intended to return, would have chosen a dry cave or rocky shelter instead of a location vulnerable to heavy tropical rains.
There is also the broader question of whether the Treasure of Lima ever reached Cocos Island in the first place. Some historians believe the entire story has been exaggerated through decades of retelling.
Yet even skeptics acknowledge that waterfalls would have served as excellent navigation points if a treasure cache had been hidden nearby.
Why the Waterfall Theory Endures
The image of a hidden treasure lying beneath a tropical waterfall has captured imaginations for generations, but this theory is more than just romantic folklore. From a practical standpoint, waterfalls offered fresh water, recognizable landmarks, softer ground for digging, dense vegetation for concealment, and the constant sound of rushing water to mask human activity.
Whether Captain William Thompson actually chose such a location remains unknown. After more than 200 years of searching, no expedition has uncovered definitive evidence proving that the Treasure of Lima rests beside one of Cocos Island’s waterfalls. However, neither has anyone disproved the possibility.
Until new discoveries emerge, the waterfalls of Cocos Island will remain among the most intriguing places to search. Hidden beneath tangled roots, buried by ancient landslides, or concealed behind the roar of cascading water, the legendary Treasure of Lima continues to challenge explorers and inspire one of history’s greatest unsolved mysteries.






