Rollins Pass

Rollins Pass, elevation 11,676 ft (3,559 m), is a mountain pass and active archaeological site in the Southern Rocky Mountains of north-central Colorado in the United States. The pass is located on and traverses the Continental Divide of the Americas at the crest of the Front Range southwest of Boulder and is located approximately five miles east and opposite the resort in Winter Park—in the general area between Winter Park and Rollinsville. Rollins Pass is at the boundaries of Boulder, Gilpin, and Grand counties. Over the past 10,000 years, the pass provided a route over the Continental Divide between the Atlantic Ocean watershed of South Boulder Creek (in the basin of the South Platte River) with the Pacific Ocean watershed of the Fraser River, a tributary of the Colorado River.

The abandoned rail route over Rollins Pass was nominated for and accepted into the National Register of Historic Places in 1980 because of significant events and engineering feats accomplished by railroading efforts in the early 20th century. In 1997, additional areas on the pass were added to the National Register of Historic Places to include achievements made by John Q.A. Rollins and his toll wagon road that traversed the pass.

In 2012, Rollins Pass was listed as one of the most endangered sites in Colorado.^: 117