National Geographic Society The Rockies Pillars of a Continent by Scott Thybony Photographed by Paul Chesley By: National Geographic Society Condition: Dust Jacket in very good condition with some slight wear on edges. Hard Cover in very good condition. Binding Strong and all pages intact. Info: • Height: 10 1/4" • Width: 7 1/8 • Thickness: 5/8" • Pages: 200