California Gardening: Daily Walks - 2, 1 by SingingWolf

SingingWolf wrote:
This rock is perpendicular (if you can be on a slope) to the ground. It's got an interesting lichen pattern on it. The hole in it was probably caused by the limb of a bush rubbing against it over a long period of time. It differs in appearance from the "pots" or grinding holes made by the NAI, because it's surface is so rough.
I'll have to show you some of my good photos of the Indian rocks. A walk for another day I'm afraid.