I am confused. I have said that bats build maps solely by echolocation for a long time, when argumenting about how what we grasp with our senses could not be al

I am confused. I have said that bats build maps solely by echolocation for a long time, when argumenting about how what we grasp with our senses could not be all there is to reality. I thought it's the perfect example without drifting immediately into a spritiual realm argument... So did i just make this up until now (now, that it was shown in a study), or was this not common belief?