Oh shoot! I forgot to mention this yesterday when I was writing.
When Rob and I were clearing some of the yard? We found something really neat nestled in the side of a small hill on the eastern corner of the property. It was buried until a pile of busted wood, branches and piles and piles of old leaves.... but... after some careful removal? We found the opening of something really interesting!
A cave! Or at least something "like" a cave! There was snow in the hole around the opening just before Rob left to go back to work out of town, so I promised that I would not go poking around there without him home. We're not sure if there is a hole in front of the cave/hole opening or not since it's still all covered with "stuff".
But I did manage to get a few pictures! There are some really neat pink rocks that are filled with Garnets and Mica just outside of the hole that were buried under the grass. The rock in the photograph shows how weathered it is, but the pink is shining through. When I peeked inside of the tiny opening that is not covered with fallen stuff? I could see more pink rock with sparkling quartz and mica. It looks as if the hole might have been blocked off and it might not go any deeper into the side of the hill, but I wont know for another week (oh the waiting is awful!)..
I'll keep you posted with pictures once I get to investigate more.