Yeah there down near Connellsville PA. I went back a good ways in the caves. I got to a point where is was getting very rocky and I didn't want to air down since it was getting dark outside and I was leaving very soon. The rocks were very sharp. It may go for a long way back as there were several columns and other side trails.
There are a lot of good trails around that area. Some river crossings, mud, rock crawling. Something for everybody.