Adam Thorne Analyzes Orang Pendek Trail Camera Footage from Sumatra

Posted Sunday, August 30, 2026

By Squatchable.com staff

**Sumatran Trail Cam Captures Mysterious Arm — And the Recreation is Pretty Convincing** So there's this wildlife adventurer and primate specialist over on YouTube who went on an expedition to Sumatra earlier this year, setting up trail cameras deep in the jungle. He rigged one of them with a speaker broadcasting ape calls — mostly orangutan and gibbon sounds — to see what might wander into range. What he caught on camera has cryptozoology circles buzzing. The footage shows what appears to be an arm swinging into frame from behind a tree, reaching toward the camera before retreating. Just 30 seconds before this clip, the same camera captured something that looked remarkably like a hand. The investigator did a full breakdown on that earlier piece, but this new segment focuses on the arm itself — and he's not ruling out that it could belong to the legendary Orang Pendek. Now, if you're not familiar with the Orang Pendek, it's a cryptid said to inhabit the forests of Sumatra. Descriptions vary, but eyewitnesses consistently report a bipedal ape standing somewhere between three and four feet tall — much shorter than a typical orangutan, but with a distinctly human-like posture. It's been compared to a small, hairy hominid walking upright through the jungle. Sound familiar? Yeah, it should. The parallels to North America's own Sasquatch are hard to ignore. What makes this video worth checking out is the recreation. The investigator actually went outside, set up his own camera at the same angle, and used his own arm to mimic the movement captured in the original footage. Then he measured everything. His forearm came in at roughly 14.8 inches in circumference. The mysterious arm in the trail cam footage? Just about the same size, maybe a touch smaller — somewhere in the 12 to 14 inch range depending on how far it was from the lens. But here's where it gets really interesting. When he crouched down to match the height and angle of whatever approached that camera, he found the animal would have stood roughly 3'8" to 3'9" tall. That lines up almost perfectly with eyewitness accounts of the Orang Pendek. And the investigator is quick to point out — this arm is way too big to belong to any monkey native to that forest, and definitely too big for a siamang (a type of black gibbon found in the region). He stresses this is an estimation, not gospel. There's no way to know the exact distance the arm was from the lens, so there's some wiggle room. But the discrepancies aren't going to be massive. We're not talking about a foot of difference in height or some wildly off forearm measurement. The numbers fall right in line with what you'd expect from a bipedal ape that size. One thing that stood out — the investigator notes this is one of those rare cases where another bipedal ape might actually have more body hair than Sasquatch. A little humor there, but also a nod to the fact that whatever this creature is, it's covered in thick hair, just like the witnesses describe. The recreation on the big screen looks pretty darn close to the original. The swing-in motion, the retreat — it's a solid match. And the investigator seems genuinely excited about what this could mean. Not proof, obviously, but another piece of evidence that something unknown is moving through those Sumatran forests. Definitely worth a watch if you're into primate cryptids, trail cam analysis, or just love seeing someone take a methodical approach to figuring out what the heck walked past a camera in the middle of the jungle. The recreation alone is worth the click.