About This Route
Mammoth Hot Springs features several beginner groomed ski loops, including the 2-mile Upper Terrace Loop and 5-mile Bunsen Peak detour, starting from park headquarters. These machine-groomed classics showcase travertine terraces, Liberty Cap, and elk-filled fields at 6,200 feet elevation. NPS maintains tracks daily; ideal for families or novices building skills. Yield etiquette is strict: slower parties pull over for descents. A real scenario: During a February storm, skiers used the loops' wind shadows to practice navigation, avoiding exposure on open roads. Reference Leave No Trace for minimizing impact on fragile terraces.
Safety Considerations
Boardwalks under snow hide thermal vents; stick to groomed paths to avoid burns, as NPS reports frequent slips. Bison jams on Lower Terrace demand 100-yard buffers; never ski between herd members. Frostnip occurs rapidly in -10°F winds; monitor with group checks every 30 minutes. Black ice on access roads requires studded tires. Avalanche risk low but present on Bunsen flanks; consult Gallatin National Forest Avalanche Center. Dress per REI protocol: synthetic layers, Hestra mittens, Smith helmet.
Essential Gear
Madshus Panorama skis for easy glide; Petzl Nao headlamp for dusk returns. Pack First Aid with moleskin for blisters.