The discovery came during the "Caving in the Abode of the Clouds Expedition" conducted from February 2-28, where ...

Approximately 700,000 years ago when molten rock erupted from a vent in nearby Hart Prairie, the mile-long Lava River Cave was formed. Today, visitors can explore the cave's cool, dark expanse by ...

Hellertown, Pennsylvania -- Lost River Caverns is open all year round ... The public is asked to leave the cave untouched. The only this that tour guides take out are the people they bring ...