Originally Posted By: FireIsHot
They look more like craters than nests. In the second pic, the right rock is oblong. So is the crater.

Displacement of silt from the thrown rocks maybe?


+1 That is my thinking as well. Easy enough to test. Throw a rock in and when the silt clears, take a look.

[Linked Image]
Be Brave Enough to Suck at Something New!