@BalooUriza isn't that just audiological-spacial processing, though? echolocation requires an echo, since the concept is a bit more like radar. there are definitely some humans who have claimed to master this though to some degree, usually after being born blind, and they very much rely on sending a sound out (like clicking) to get the feedback. it's thought that the extra brainspace is malleable enough to make it work. (it's been a bit since my evolutionary neurology class lol)