Archaeology

I went down to the beach late this afternoon, to see if I could find an interesting photo in the rain.  Man, it was cold!  So I looked around and the only thing I could find was this bit of archaeology.  Apparently years and years ago there must have been a bulkhead here, which has since rotted away.  The level of sand on the beach was way down, exposing this.  Usually it is much higher - I don't ever remember seeing this before.  When the prevailing winds change, I am sure that this will once again disappear beneath the sand.