For those into geology, they're a part of the Dakota Formation. A combination of millions of years of erosion and the different sediments in the rock layers ... to the world's best-kept travel ...

“Rock” is so loose a label as to be pretty much meaningless these days. But the best rock albums, even if they aren’t that musically similar, share some things in common: boundary-breaking ...

A heavy mist rolls over the cold beauty of rock formations in San Joaquin, Iloilo, Philippines on January 2, 2014. (Eduardo S. Seastres) Want to see your images in our Photo of the Day posts? Use ...