Geology in Arizona

A family-owned store specializing in minerals, geodes, gemstones, and more.

An improbable sinkhole in the sediments flanking the Beaver Dam Mountains.

At certain times in the fall and winter, the sunlight makes this natural sandstone arch glow.

This open-pit mine is now an abandoned symbol of Bisbee's copper-mining heritage.

This mesmerizing and surreal landscape features intricate patterns of white and red sandstone.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

The largest and most well-preserved petroglyph site in the Verde Valley.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

The eroded core of an ancient volcano is now accessible by a short hike.

This old selenite mine is dotted with tiny crystals that make it shimmer like it's covered in glitter.

Legend says train robbers stashed their gold within the depths of this unusual cave.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

A natural history wunderkammer in the middle of the desert.