Craters of the Moon National Monument:
This park is evidence of lava flow from long ago -  very odd indeed and not a
whole lot to look at - but we did find ourselves quit interested in all it had to
offer.  We were here during a wind advisory and stayed in the campground
overnight.  Lots of wind whipped trees and there was a cave at the end of the
trail.  I don't know yet if I like going down into caves.