Hmm, left by water... reminds me of the bottom of the tidal river in NH we used to walk on at low tide - hard, wet ridges under your feet, cold and salty. Smell of sea air. But it also reminds me of ribs, bark, mountains seen from the air...

I see a human figure in motion.

Yes, I can see what Dave means. This looks simple, and gets more complex and allusive the more you look at it. Terrific.

Close-up of elephant hide.

It reminds me of ancient Egyptian paintings or medieval tableau sculptures.

Thanks everyone! I see all those things, except the elephant hide, heh. Mountain ridges become a row of figures in a Greco-Roman frieze. Oh! That made me recall a monoprint I did years ago: A Greek Chorus. What fun this post turned out to be, thanks to your interesting responses. Amazing what patterns in the sand can evoke.