Alan Cressler: Bedrock Mortars, Los Morteros Site, Pima County, Arizona 2
Alan Cressler: Bedrock Mortars, Los Morteros Site, Pima County, Arizona 3
Alan Cressler: Bedrock Mortars, Los Morteros Site, Pima County, Arizona 3
Alan Cressler: Calvary Cave, Fort Huachuca, U.S. Army, Cochise County, Arizona 10
Alan Cressler: Calvary Cave, Fort Huachuca, U.S. Army, Cochise County, Arizona 14
Alan Cressler: Calvary Cave, Fort Huachuca, U.S. Army, Cochise County, Arizona 3
Alan Cressler: Calvary Cave, Fort Huachuca, U.S. Army, Cochise County, Arizona 4
Alan Cressler: Calvary Cave, Fort Huachuca, U.S. Army, Cochise County, Arizona 5
Alan Cressler: Calvary Cave, Fort Huachuca, U.S. Army, Cochise County, Arizona 7
Alan Cressler: Calvary Cave, Fort Huachuca, U.S. Army, Cochise County, Arizona 9
Alan Cressler: Calvary Cave, Fort Huachuca, U.S. Army, Cochise County, Arizona, Brian Killingbeck, Greg Huston, Tom Gilleland 1
Alan Cressler: Cliff Dwelling, Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona 11
Alan Cressler: Cliff Dwelling, Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Brandon Stephens 10
Alan Cressler: Cliff Dwelling, Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Brian Killingbeck 1
Alan Cressler: Cliff Dwelling, Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Brian Killingbeck 12
Alan Cressler: Cliff Dwelling, Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Brian Killingbeck 2
Alan Cressler: Cliff Dwelling, Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Brian Killingbeck 3
Alan Cressler: Cliff Dwelling, Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Brian Killingbeck 6
Alan Cressler: Cliff Dwelling, Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Brian Killingbeck 7
Alan Cressler: Cliff Dwelling, Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Jeff Moore 8
Alan Cressler: Coronado Cave (Entrance 1), Coronado National Memorial, Cochise County, Arizona, Brian Killingbeck, Greg Huston 1
Alan Cressler: Curtain Cave, Huachuca Mountains, Coronado National Forest, Cochise County, Arizona, Brian Killingbeck 1
Alan Cressler: Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona 8
Alan Cressler: Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Brian Killingbeck 1
Alan Cressler: Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Brian Killingbeck 2
Alan Cressler: Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Brian Killingbeck and Jeff Moore 7
Alan Cressler: Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Brian Killingbeck, Greg Huston, Jeff Moore 3
Alan Cressler: Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Brian Killingbeck, Greg Huston, Jeff Moore, Brandon Stephens 5
Alan Cressler: Devils Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona, Greg Huston 4
Alan Cressler: El Diablo Cave, Devil's Chasm, Sierra Ancha Wilderness, Tonto National Forest, Gila County, Arizona 1