A tribe in a dense forest

jungle

Somewhere in the late 1800s a group of British explorers stumbled upon a peculiar tribe of Indigenous Australians. They lived in a very dense part of a very dense forest.
Their habitat was just this; trees and trees and trees, they had never seen anything further than 2 meters.
The anthropologists guided them to an open field, and for the first time in their lives they experienced a far view. Out in the open, the tribe couldn’t stop laughing, because to them people in the distance did not look “far away”, they just looked like very small people.

I wonder how limited current human perception is, and if some future explorer will guide us to another kind of open field.