Official website for Mammoth Cave offers a wealth of information for curious about the history, culture, and science of this cave system. Contains photos and multimedia presentations, stories about the primitive miner, explorers, and...

John Muir National Historic Site is found in Martinez, California and was the home of famed naturalist, co-founder of the Sierra Club and proclaimed "Father of Our National Park System," John Muir. Find facts and quotes about John Muir...

A collection of puzzles, activities, lessons, and games related to Mammoth Cave, cave systems in general, and related topics, such as fossils, bats, weathering, and erosion.

Information and activities enhance student exploration of wildfire ecology and human interventions in Yellowstone National Park, and provide a background for land use management studies.

A page on the Wilderness that includes an enchanting description, the location, and basic facts such as acres, elevation, miles of trails, and hunting areas.