This is just the beginning! Our collection holds over 300 years of history, including rare newspapers, obituaries, marriage records, birth records, and so much more—most of which you won’t find anywhere else!
Popular caves lure explorers and sightseers across the United States
The US Geological Survey notes about 50 000 caves exist in the United States with roughly 17 000 explored. Mammoth Cave Kentucky and Carlsbad Caverns New Mexico draw millions of visitors annually while caves form through water and rock erosion or by wind, ocean, and volcanic activity.
MENTIONED IN THIS ARTICLE
United States
Rhode Island
Louisiana
US Geological Survey
National Geographic Society
Mammoth Cave
Kentucky
Echo River
Mammoth
Carlsbad Caverns
New Mexico
Carlsbad
Arizona-Sonora Desert
Tucson