Layered rock formations The Grand Canyon is a geological marvel, with layers of sedimentary rock that span nearly two billion years. The vibrant colors – from deep reds to golden yellows ...

The gigantic Yellowstone Grand Canyon, lined with volcanic rock. With all the effects of hydrothermal activity, river erosion ...

If you're bored with the usual Valentine's Day date ideas, why not change it up with a romantic hiking trail in Texas? This ...

This lodge sits inside a national monument and between two national parks. Who wouldn’t want to rent one of its cabins, ...

Utah's Bryce Canyon National Park is by far the ... Among its many features are the prominent Grand Staircase (a massive sedimentary rock formation), several natural canyons formed by the ...

A few miles south of the Grand Canyon, thousands of tons of uranium ... When the heaps of crushed rock grew too sprawling, they pulled the miners out of the tunnels and turned the drilling ...

There are alot of great caves in the US but there is a hot debate over which one is better Mammoth Cave or Carlsbad Caverns.

In the area that would become the Grand Canyon, compressive forces and increasing temperatures caused metamorphic and igneous rocks to form together. Then, sedimentary layers began to pile up, with ...