Findings:

• Gesso duro
• Canyon de Chelly
• Canyon De Chelly National Monument
• Sabino Canyon
• Copper Canyon Press
• box canyon
• Des Canyons Aux Etoiles
• Grand Canyon National Park
• Marble Canyon National Monument
• Glen Canyon Dam
• Thunder Canyon
• Shoemaker Canyon Road
• Operation of Eldorado canyon
• duro (user)
• Little River Canyon National Park
• Palo Alto, California
• Palos Verdes
• Jarabe de Palo
• Palo verde
• Palo Mayombe
• SS Palo Alto
• palo (user)
• Palo
• Palo blanco
• Palo Santo
• Palo Verde Generating Station
• Palo Verde Generating Station Disaster
• Cold Canyon
• Steve Canyon
• canyon
• yodel up the canyon
• Bryce Canyon National Park
• Santa Elena Canyon
• Operation El Dorado Canyon
• Provo Canyon Tunnel
• Black Canyon of the Gunnison National Park
• Ceta Canyon
• Towsley Canyon
• Grand Canyon
• Chaco Canyon
• Canyon (user)
• Canyon of Heroes
• Copper Canyon
• Space Canyon
• Torrey Canyon
• Grapevine Canyon
• Half a Canyon
• Canyon carving
• Horseshoe Canyon
• Tuna Canyon Road
• Laurel Canyon
• Kings Canyon

If you Log in you could create a "Palo Duro Canyon" node. If you don't already have an account, you can register here.