📜 Historic twin train trestles built in 1905 at 11,600 feet elevation. 🔍 Cling to a mountain side, 1,000 feet above Middle Boulder Creek. # Why Go ⛰️ See impressive historic engineering in the Colorado Rockies. 🚶‍♀️ Hike or mountain bike scenic trails to the site. 📸 Enjoy stunning views, including the King Lake area of Indian Peaks Wilderness. # Why Avoid ⚠️ Trestles are decaying, unsafe, and closed to crossing. 🚗 Rollins Pass Road is barely accessible by sedan; higher clearance vehicles are better. ⚡ Dangerous storms and lightning can move in quickly above timberline. ❄️ Snow crossing is possible even in late summer. # Tips ⏰ Go early and get down early to avoid lightning. 🚴 The mountain bike ride is at high altitude, making it more challenging. # 🅿️ Parking Trailheads from east (16 miles from Rollinsville) or west (10 miles from Winter Park Ski Area) on Rollins Pass Road.