John takes his own Journey to the Center of the Earth down a lava tube in Iceland with the author of Icelandic Caves, Björn Hróarsson, as his group’s guide.
Four show caves in Southern Indiana make up the Indiana Cave Trail, providing close encounters of the underground kind with unusual karst features
Israel’s only show cave, Soreq, is one of the world’s most highly decorated caves, with an abundance of unusual speleothems. It is protected by Stalactite Cave Nature Reserve.
Your view of Iowa is turned upside down at Maquoketa Caves State Park, a family-friendly caving destination south of Dubuque that lets you climb right in and explore wild caves.
A mecca for Mid-Atlantic mountain climbers, Seneca Rocks is a showcase of extraordinary geologic wonders both above and below the earth’s surface.
Way down under the Withlacoochee State Forest, there’s a whole other world waiting to be seen. The forest is rich with caves, and there are groups that lead explorations into them.