The site design is somewhat unfortunate, but The Virtual Cave
features lots of photos and information on, well, caves and cave formations
. We've all heard of stalagmites and stalactites, but I'd never heard of cave draperies
or cave pearls
before. Then you've got your helictites
, your aragonite
, and your splash stalactites
(found in lava tubes
). And they've got a Show Caves Directory
of caves in the United States that are open to the public, with addresses and contact information by state
50 foot long single spar crystals
found in a Mexican cave 1,000 feet below the surface! Smithsonian has links to other related sites. This one has pictues.
More pictures can be found in the April 2002 print issue of Smithsonian.