The Great American Outdoors Act Legacy Restoration Fund financed critical preservation work on the roof and gutter system on the historic cabin at Jewel Cave National Monument. The cabin was built ...

Mammoth Cave in Kentucky for haunted secrets, and Jewel Cave in South Dakota for brilliant rock formations. Adventure to Lava Beds National Monument in California for lava tubes, and Caverns of ...

Underground caves include Jewel Cave, the third longest cave in the world, and Wind Cave, located under a wildlife sanctuary. Travel + Leisure is published by Meredith Corporation under license ...