Very neat. I like the sculpture too. MB
My impression is of an alien space craft having crashed to earth.
They do draw the attention, and yes, I'm reminded of ship hulls.
My friend Mike would say I should leave the mystery and encourage ontology, but... the sculpture is called Duplex Cone. On the winter solstice, the sun follows along the edge of the smaller cone. On the summer solstice, the sun follows along the edge of the larger cone. http://oaklandwiki.org/Duplex_Cone