Mars Express orbiter has provided invaluable insights into this area, revealing how these geological features came to be and ...

The world’s largest flat-top mountain, the landmark looming in view just about anywhere you go in western Colorado, is a “secret?” It can indeed feel that way, said Melissa Newell.

In southeast Arizona, the flat-topped mesas and rocky spires of Chi’chil Biłdagoteel (known in English as Oak Flat) give way to grassy basins where Emory oak trees grow, shedding acorns every ...

Established in 2000, Canyons of the Ancients National Monument in Colorado’s far southwestern corner is a relatively untouched wilderness of flat-topped mesas and twisting canyons whose colorful pink, ...

Island in the Sky Island in the Sky is a large, flat-topped mesa easily accessible from Moab that offers spectacular views. It’s also the most popular area of Canyonlands.