One of the largest and most spectacular cave systems in the world, Carlsbad Caverns comprise some 100 known caves that snake through the porous limestone reef of the Guadalupe Mountains. Fantastic and grotesque formations fascinate visitors, who find every shape imaginable (and unimaginable) naturally sculpted in the underground world -- from frozen waterfalls to strands of pearls, from soda straws to miniature castles, from draperies to ice-cream cones.
Although Native Americans had known of the caverns for centuries, they were not discovered by Anglos until about a century ago, when settlers were attracted by sunset flights of bats from the cave. Jim White, a guano miner, began to explore the main cave in the early 1900s and to share its wonders with tourists. By 1923, the caverns had become a national monument, upgraded to national park status in 1930.