A group of bikers riding down a dirt track in near Banda Aceh happened to film a small, half-naked man during a ride out.
The motorcyclists were travelling down the track when they saw the bald man leap out of the trees.
The clip shows one of the bikers falling to the ground as the unknown figure runs away from the group.
One of the bikers races in pursuit of the man – but he eludes the biker, and jumps into bushes by the side of the road before disappearing altogether.
The rest of the group catch up and look for the man in the bushes but are unsuccessful in finding him.
The grass is too high for him to be easily spotted, and he slips into the trees behind.
Determined, a few of the motorcyclists venture into the bushes to try and see where the possible tribesman went, and to see if he dropped the large stick he was carrying.
The video footage caught by the bikers was uploaded to YouTube, where it has had over three million views in a few days.
Some commenters think the man is a member of the lost pygmy tribe in Indonesia.
The Mante tribe are claimed to be smaller than the average man and flee when they see people from the outside world.
The only record of the supposed tribe was in the 17th century, when it was said two Mante tribesmen were captured and presented to the Sultan.
But most people think the Mante people are just a legend, and have never existed, let alone live today.
The possible discovery of the Mante tribe comes months after a rare insight into a naked tribe was shared.
The nude nomads – called rainbow people – live near banks and in forests with a focus on expressing unconditional love.
The rare images have captured an insight into the daily life of the liberated communities.
One photo shows men and women holding hands in a circle on the beach.
