Caves offer variety of challenge (AP)


Caver Mike Wiles is seen at Jewel Cave National Monument, S.D. on Oct. 2, 2007. He and other volunteers helped map the cave past 142 miles, making it the second longest cave in the world. (AP Photo/Dirk Lammers)AP – Caver Mike Wiles has helped document the far reaches of this cave that’s a favorite Black Hills tourist attraction, but tours are available here year-round and elsewhere for the more casual explorer.