Cretaceous fossils 57 Wolford Mountain, north of Kremmling 60 Eohippus, the “Dawn Horse” 61 Golden and South Table Mountain 62 Devil’s Staircase, near Spanish Peaks 63 Green River oil shale, west of Rifle 64 Florissant Fossil Beds National Monument 65 Pawnee Buttes, north of Fort Morgan 66 Fossil mammals, northeastern Colorado 67 Glacial lakes in Rocky Mountain National Park 68 Arapaho Glacier, west of Boulder 70 Pleistocene mastodons 72 Great Sand Dunes National Monument 73 Colorado Mineral Belt (map) 78 Sluicebox mining in early Colorado 81 Early-day Leadville 82 Gold dredge, Fairplay 84 Silverton, in the San Juan Mountains 86 Abrams Mountain, south of Ouray 87 Creede and its mines (map) 89 Cripple Creek, near Pikes Peak 90 Climax molybdenum mine (cross section) 91 Rampart Range quarry, near Colorado Springs 98 Yule Marble quarry, near the town of Marble 99 Lyons Sandstone quarry 100 University of Colorado Museum 100 Colorado-Big Thompson Project (cross section) 103 San Luis Valley (cross section) 105 Cave of the Winds, near Manitou 107 Mesa Verde cave and Indian dwellings 108 Glenwood Hot Springs 109 PRAIRIE PEAK and PLATEAU Introduction