The Wheeler Geologic Area is a highly eroded outcropping of layers of volcanic ash, in the La Garita Mountains of Mineral County. The ash is the result of eruptions from the La Garita Caldera ...

Wheeler Geologic Area, a wonderland of stone pinnacles and hoodoos (above), was once a top Colorado attraction. Now, only backcountry hikers and those willing to drive 13 miles on a dirt road earn ...