Desert ants increase the visibility of their nest entrances in the absence of landmarks https://www.mpg.de/20377392/0525-choe-desert-ant-increase-the-visibility-of-their-nest-entrances-in-the-absence-of-landmarks-155371-x
If other visual cues are missing, desert ants build higher nest hills to facilitate – homing of foraging nest mates.
If the mound at the nest entrance was removed, they immediately began building a