When I was a kid long time ago, when a schoolmate or a playmate find a hole like this, he/she would put some water inside and minutes later, something coming out.
Most of all was a cricket, and all the kids wanted to grab it. Somehow there was a little snake went out and kids screaming and run away.
There were some boys pee into the hole instead of water we all hoped a snake jumping out to bite them. 😀
Hasselblad 501cm + Carl Zeiss Distagon T* 3.5/60 + Lucky Aero Film (developed by D76, 1+1 with 11.5mins 20C)