September 2, 2014

Bob Marshall Wilderness, Montana

Photograph by Prisma Bildagentur, Alamy

A huge escarpment called the Chinese Wall ripples across the landscape of the Bob Marshall Wilderness Area in Montana. In a 1985 National Geographic article, senior writer Mike Edwards said: "It does not look like China's wall, except that it crowns all and is gray rock, mostly limestone. To my eye it is a juggernaut of a tidal wave, surging out of the west, lifting its crest a thousand feet."

See pictures of Montana in summer >>

Travel 365. Explore the world, one incredible image at a time.

Take a Nat Geo Trip

Select a destination or trip type to find a trip:

See All Trips »

Join Nat Geo Travel's Communities

2015 Traveler Photo Contest

  • Picture of a tree under night stars in Deadvlei, Namibia

    See the Winners

    Explore the top photos, share your favorites, and browse all entries.