Coal Cracker aka Mount Pisgah is an advanced level trail in a very remote setting of an old coal strip mine. There is a myriad of cross trails so a guide would be recommended. A blast with tons of rocks and roots and some very *dangerous* cliffs to ride along. 95% singletrack
Park at Mauch Chunk Lake Park and head North to the Switchback Trail. Ask in downtown Jim Thorpe at Blue Mountain Bike Shop.
http://www.singletracks.com/item.php?c=1&i=412