There are several old buildings in Kingman that were constructed with natural stone. The Bonelli House, the old court house, ...

Researchers have dated volcanic layers at six fossil-bearing sites in Turkey, including one known as Taşhan (shown). The ...

In the high desert of north-central New Mexico, a 40-minute drive west of Santa Fe, a surreal landscape of eroded volcanic ... sculpted from layers of ash, pumice, and tuff. Kasha-Katuwe Tent ...