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1906 Map of Grand Hogback

Name: 1906 Topographic Map of Grand Hogback
Creator: U.S. Geological Survey
Published: 1959
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1959

About this map

The Grand Hogback forms a striking geologic spine through this 1906 topographic study, marking the sharp transition between the Roan Plateau and the lower river valleys. Along the southern edge, the Colorado River corridor serves as the primary artery for settlement and transport, anchored by the Denver and Rio Grande RR. This rail line connects the agricultural and ranching hubs of Rifle, Antlers, Silt, and Newcastle.

Upward from the river, the landscape is defined by the steep Roan Cliffs and isolated landmarks like Burning Mtn and Monument Peak. Early transit routes are visible in the northern interior, where Dinner Sta provided a stop along the trail toward the Rio Blanco settlement and the White River. The map captures a moment when the regional economy was firmly rooted in the geography of the river canyons and the grazing lands of Cactus Valley.