The Mummy Range is a mountain range in the Rocky Mountains of northern Colorado in the United States. The range is a short subrange of the Front Range located in southwestern Larimer County northwest of the town of Estes Park. It is located largely within Rocky Mountain National Park, extending north from Trail Ridge Road approximately 15 mi. Th…The Mummy Range is a mountain range in the Rocky Mountains of northern Colorado in the United States. The range is a short subrange of the Front Range located in southwestern Larimer County northwest of the town of Estes Park. It is located largely within Rocky Mountain National Park, extending north from Trail Ridge Road approximately 15 mi. The Arapaho name is "nooku-bee3ei-no," which translates to "White Owls."