Jewell Cave National Monument...

..the ceiling is full of Calite Crystals..

...South Dakota, I thought we'd go in and look around,
to see what things are like, we you go underground;
it's a large cave 152.8 miles long,
but we won't venture, where we don't belong.

Calite Crystals are nice to look at, but ahem...
hard as a fingernail, to soft for a gem,
I think they look best in their enviornment here,
but I don't like underground stuff, get me outa here!


..no need to paint the walls..




...more crystals..