Rollins Pass, elevation , 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. Naming Rollins Pass is the sole, official name recognized by both the United States Geological Survey and the United States Board on Geographic Names (BGN); a decision card was issued on Wednesday, December 7, 1904. The pass was first known as Boulder Pass—one of two variant names accepted by the BGN—the other being Rogers Pass. The pass was also known infrequently as Rollinsville Pass. In Grand County, Rollins Pass is sometimes given the sobriquet of Corona Pass, named for the apex station at the summit, Corona. This nomenclature dispute provoked the ire of former railroaders; in fact, Frederick Bauer remarked, "[Rollins Pass is] incorrectly called Corona Pass by neophytes and some locals." It is inconsistent, as well as atypical, to refer to mountain passes by the names of their apex stations. Fremont Pass, for example, is not named Climax Pass; nor is La Veta Pass referred to as Fir Pass. Elevation The elevation of '11,660 feet' commonly attributed to Rollins Pass (note the McClure sketch later in this article) "reflects what might have been an original survey value obtained during either the late wagon road era or early