For outstanding information about caves, visit these web sites:
Generalized Stages of Cave Development
From the National Park Service
Find excellent drawings about how caves form.
National Cave and Karst Research Institute
The National Cave and Karst Research Institute (NCKRI) is a non-profit government-supported institute headquartered in the City of Carlsbad, New Mexico. Its goals are to conduct, support, facilitate, and promote programs in cave and karst research, education, environmental management, and data acquisition and sharing.
National Caves Association
This web site has thorough information about how caves form, types of caves, cave creatures, cave formations, protecting caves, material for teachers, and educational links.
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