When I lived in Venice Beach, I was really into esoteric writings about the earth and amplification. The beach was only a five minute walk from our apartment, and it was strewn with these huge boulders, if you walked far enough. I used to sit on those rocks and imagine them as giant amplifiers, just blasting my intentions out into the air/world/universe.
I don't know if it worked, but I did come away with the lesson that rock is a magical substance, less barrier, and more bolsterer.
And so what if all I did was entertain a few dolphins and the occasional seal? There must be magic in that somewhere.
p.s. Yes, my garden is still blanketed beneath snow; this photo was taken a few summers back--rogue mint sprung from its bed.