About This Route
The Lone Star Geyser Trail offers one of Yellowstone National Park's premier backcountry skiing experiences, a roughly 8-mile round trip from the Old Faithful Snow Lodge area. This intermediate route winds through the Upper Geyser Basin, past Kepler Cascades, and into the remote Firehole River Valley, culminating at the impressive Lone Star Geyser cone. Groomed intermittently by park rangers, the trail sees heavy snowpack, with 4-6 feet of accumulation typical by mid-winter. NPS recommends this for experienced skiers comfortable with rolling terrain and potential ungroomed sections. Expect 1,000 feet of elevation gain overall, with stunning views of geyserite formations and geothermal features. Skiing here follows Leave No Trace principles: stay on designated tracks, yield to faster skiers, and pack out all waste. Real-world scenario: In January 2022, a group of skiers reached the geyser just as it erupted, a 30-40 foot plume lasting 10 minutes, but they prepared for sudden weather shifts that dropped temps to -20°F.
Safety Considerations
Yellowstone's winter climate demands vigilance; temperatures plummet to -30°F at night, with wind chills exacerbating hypothermia risk, per NPS winter safety guidelines. Dehydration hits fast at 7,000-8,000 feet elevation, so drink from insulated bottles frequently. Thermal areas near the trailhead pose scalding hazards; slippery snow near hot springs causes frequent falls, as noted in NPS reports. Watch for bison herds along the Firehole; maintain 100 yards distance, as required by park rules. Avalanche danger is moderate on steeper slopes above the valley; check daily forecasts from the Montana Avalanche Center. Follow the AIARE protocol: observe snowpack stability before committing to sidecountry descents. Frostbite prevention involves layer management: base with merino wool from Smartwool, mid-layer fleece like Patagonia R1, and a Gore-Tex shell. Sunglasses prevent snow blindness from intense UV reflection off snow.
Essential Gear
Beyond basics, pack REI Co-op Karhu XCD touring skis with Voile bindings for reliable skinning; Black Diamond Whippet poles double as self-arrest tools. Avalanche transceiver, probe, and shovel from BCA are mandatory for any off-track exploration. Carry an insulated Nalgene with hot water, plus energy gels from Clif Bar. Use Kahtoola microspikes for bootpacking icy sections near geysers.