Environmental sound works by David Dunn, 1973-1985.
#1-1 recorded in the interior of the Grand Canyon over a three-day period from the 17th to the 20th of June, 1973.
#1-2 realized at Azalea Glen, Cuyamaca State Park, California, from May to September, 1984.
#1.3 recorded at Azalea Glen, Cuyamaca State Park, California on May 19, 1985.
#2-1 realized on December 11, 1977 at Little Blair Valley, Anza-Borrego Desert State Park, California.
#2-2 recorded outdoors in Balboa Park, San Diego, during July 1976.
#2-3 commissioned by the Radio Performance Project, University of New Mexico, Albuquerque in 1979. Recorded in the Anza-Borrego Desert, California.