Rollins Pass, Rail mountain pass in Colorado, US
Located at an elevation of 3,500 meters in the Rocky Mountains, Rollins Pass connects Boulder County with Grand County through a former railroad route.
The Denver, Boulder and Western Railway constructed this mountain pass in 1903 to establish a transportation route between Denver and the western regions.
Archaeological remains near Rollins Pass reveal ancient game drive systems used by Paleoindian hunters more than 10,000 years ago for seasonal migrations.
The mountain pass remains accessible from June to November for hikers and cyclists, while winter conditions make the route impassable due to snow accumulation.
The former railway path includes the Needle Eye Tunnel, which closed in 1990 following structural issues that led to safety concerns.
Location: Colorado
Elevation above the sea: 3,500 m
GPS coordinates: 39.93420,-105.68300
Latest update: May 25, 2025 20:58
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