The towering Gray's Arch is 50 feet tall and 80 feet wide.

Done-It List

Kenneth Bogart

Brandon Cook

Peering down the tunnel of the Rock House.

Done-It List

Kenneth Bogart

Brandon Cook

Done-It List

Kenneth Bogart

Travis Tyler

Blackwater Falls State Park Campground

Allegheny Plateau, West Virginia

Dave Kiel

Gray's Arch

Red River Gorge Natural Geological Area

Blackwater Falls State Park

Allegheny Plateau, West Virginia

Dave Kiel

Auxier Ridge Loop Trail

Red River Gorge Geological Area

Timberline Lake Hike

Sawatch Range + Elk Mountains, Colorado

Clifty Falls State Park Loop

Indiana Southern Lowlands, Indiana

Daniel Rosselli

Bretag Trail and Upper Central Garden Loop

Southern Front Range, Colorado

Hocking Hills State Park

Allegheny Plateau, Ohio

Lake Louise Trail

Wind River Range, Wyoming

Mammoth Cave National Park

Mississippi Plateau, Kentucky

Great Smoky Mountains National Park

Smoky Mountains, Tennessee

Red River Gorge Geological Area

Kentucky Cumberland Plateau, Kentucky