The Valles Caldera in New Mexico is the setting for Book Two of the Angus series of novels. More than a million years ago, a volcanic eruption created a 13-mile wide enclosed caldera filled with water. High mountain peaks formed from ring fractures dominate the caldera. It became a life sustaining place for generations of Indians, Hispanics, and Anglos.

This novel is about the epic battle between U.S. Marshal, Angus Esparazza, and a bad hombre named Mendoza-Mendoza, on the rim of the Valles Caldera. Mendoza and his men were tracking Angus up the Rio Grande to the confluence...