Never heard of, or saw these before,
as piece's of art they are beautiful,
my first thought was also, like others have suggested,
a musical instrument of some sort,
pan pipes, flutes or chimes
What really caught my eye tho was "the cow god"
Seriously, somebody should call Giorgio and the ancient alien crew,
That thing is a grey!!, and we all know their connection to cows,
Praise be the bullgod...