A Land in Motion: California's San Andreas Fault
Michael Collieris a freelance writer and photographer based in Flagstaff, Arizona, where he is also a family-practice physician. He has contributed photographs and essays to numerous publications includingNational Geographic Traveler,Sunset, andPacific Discovery. Among his previous books areWater, Earth, and Sky: The Colorado River Basin(1999),Arizona: A View from Above(1990), andThe Geology of Death Valley(1990).