I was out hiking on Sunday in Jim Thorpe. Mount Pisgah is a favorite spot to sit on the rocks and veg out overlooking the Lehigh Gorge. The top of this mountain range between Jim Thorpe & Nesquehoning has been ripped apart due to strip mining long ago but at Mount Pisgah, there is a great overlook.
While hiking the Switchback Trail toward Pisgah leading out from Mauch Chunk Lake I took a detour on an unknown trail and it lead me to the mouth of an abandon mine. It was filled with clear water like a pond. Without gear, I wasn't even thinking about venturing in. Some old piles of coal & slate near by too. The opening was about 3.5' high and maybe 10' wide, solid rock.
I walked and biked the Switchback many times but I've never stumbled upon this mine. It was pretty cool, with a cold draft of air bleeding out.