A close-up of some of the tiny, honeycomb erosion in the boulder.  This
picture makes it difficult to tell the scale -- each cave is actually a
few inches tall.  I can easily imagine it as a cut-away view of the
rooms and buildings of a city built into the rock, all inhabited by tiny
people. <br /> This close-up is of the part of the formation seen in the
lower-right of the previous picture.