I live in the Northern Colorado Frontrange area. The name I use for it is Plain’s Edge, because the High Plains end here, the edge with the Rocky Mountains. The whole region a mile or more above sea level, or close to. very little is below 5,000 feet, though parts of the Eastern end of the High Plains part of Colorado are as low as 3800 feet or so. The region is geographically called the Colorado Piedmont, which is basically divided into two sections, with the Dawson formation between. The Dawson Formation is an uplift between Castle Rock in the northern section and Colorado Springs in the southern. In a spiritual sense, I’ve found the northern and southern regions to be two distinct regions with very different spirits. Both together form the upper portion of the South Platte River basin, the Platte being the central river the two regions and the areas surrounding them drain into, which eventually flows into the Missouri river. The southern section also containing the upper portion of the Arkansas River Basin. The northern section is what I refer to as Plain’s Edge.
Pre-settlement, the Southern Arapahoe were the main tribe that lived in the Plain’s Edge region. They were nomadic, but mostly stayed within those confines. Their kin, the Northern Arapahoe, shared the region in Wyoming I previously lived in with the Shoshoni primarily, with some overlap with the Cheyenne, Blackfoot, and some other tribes. A portion of the Cheyenne also lived in the Plain’s Edge area and the southern basin, and the Apache and others were in the southern basin as well. In the mountains to the west, the southern basin bordered Navajo territory, and Plain’s Edge bordered Ute territory, primarily.
Plain’s Edge, as I said, is defined in the South by the Dawson Formation. This hilly region is mostly covered by Ponderosa Pine and scrub oak. To the East, there is an escarpment, not as noticeable as other areas because it ends with the level surface of the High Plains, but drops off into Plain’s Edge and the southern section from the plains higher up. In the North, there is an uplift area along the Wyoming/Colorado border. Known as the Virginia Dale Precambrian Ring-Dike Complex geologically, and mainly Sherman Granite, it is characterized by rocky sandstone points and narrow river and creek valleys, the valleys being lush grassland and the ridges and points being rocky with primarily ponderosa pine. To the West is first the Foothills, then the Frontrange itself. The Foothills are basically a smaller range of mountains rising to 7000-8000 feet with steep creek and river cut canyons between them, with some low parks (flat regions up in the mountains between ridges, the most famous being North Park and South Park, the latter being where the creators of the cartoon by the name grew up). The Frontrange rises to the Continental Divide, 14,000 feet and higher in most places except for some low spots and canyons through it.
Plain’s Edge is approximately 50 miles east to west and 100 miles north to south.
~Lorekeeper, October 15, 2014