Become a Member

Since 1950, we have led the effort to permanently protect nearly 110 million acres of wilderness. We have been at the forefront of nearly every major public lands victory.

Our Mission

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What We Do

  • Exploration: iind idensini3d2 inesiwnid

  • Mapping: iniddn3wd in4inwi sini3dn2

  • Cave Gating: inein ienwis inediws

  • Recreational Caving: i4d3ome o4fmd3o2m oe

  • Ridgewalking: inidwmsim2 ixeqwmd2oq