Great Smoky Mountains National Park
Kentucky Cumberland Plateau, Kentucky
Mammoth Cave National Park
South Cumberland State Park
Las Vegas + Southern Nevada, Nevada
Great Smoky Mountains National Park
House Mountain State Natural Area
Kauai + Niihau, Hawai'i
Southern Blue Ridge Mountains, Georgia
Grand Staircase-Escalante National Monument
Kauai + Niihau, Hawai'i
Polihale State Park, Kauai