A hiker rests on a hoodoo at Chiricahua National Monument, Arizona, USA.

A hiker rests on a hoodoo at Chiricahua National Monument, Arizona, USA. The Heart of the Rocks Loop Trail (7 to 9 miles) makes an excellent day hike through fascinating arrays of hoodoos. 27 million years ago, huge volcanic eruptions laid down 2000 feet of ash and pumice which fused into rhyolitic tuff. This rock has eroded into fascinating hoodoos, spires, and balanced rocks which lie above the surrounding desert grasslands at elevations between 5100 and 7800 feet. At Chiricahua, the Sonoran desert meets the Chihuahuan desert, and the Rocky Mountains meet Mexico's Sierra Madre, making one of the most biologically diverse areas in the northern hemisphere. While we drove the dirt road to nearby Portal, Arizona, Carol saw a mountain lion crossing the road! Other animals here include javelina, coatimundi, bears, skunks, and deer.

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Filename: 03AZ-11-15_Chiricahua-Hoodoos.jpg
Copyright: © Tom Dempsey / Photoseek.com
Image Size: 3604x2417 / 3.6MB; http://www.photoseek.com/; Hoodoos of Chiricahua National Monument Arizona USA desert desert island eroded volcanic ash geologic layer rhyolite rock tower southwest yellow lichen
Contained in galleries: Arizona: Chiricahua National Monument & Cave Creek Canyon

A hiker rests on a hoodoo at Chiricahua National Monument, Arizona, USA. The Heart of the Rocks Loop Trail (7 to 9 miles) makes an excellent day hike through fascinating arrays of hoodoos. 27 million years ago, huge volcanic eruptions laid down 2000 feet of ash and pumice which fused into rhyolitic tuff. This rock has eroded into fascinating hoodoos, spires, and balanced rocks which lie above the surrounding desert grasslands at elevations between 5100 and 7800 feet. At Chiricahua, the Sonoran desert meets the Chihuahuan desert, and the Rocky Mountains meet Mexico's Sierra Madre, making one of the most biologically diverse areas in the northern hemisphere. While we drove the dirt road to nearby Portal, Arizona, Carol saw a mountain lion crossing the road! Other animals here include javelina, coatimundi, bears, skunks, and deer.