Years ago, when Cat first visited this mine, it was not gated like it is now. Even though the mine was (and usually is) filled with about a foot of water Cat explored it. She reports that it goes back about 1/4 of a mile and seemed very solid and stable.
Now-a-days the mine entrance is gated so exploring isnt even an option, but its still fun to explore the general area! Lots to see and truly beautiful views!