Klawatti South Face and Eldorado SW Couloir
North CascadesBest Apr–May
A spring two-summit linkup on the Eldorado Icecap — Klawatti's south face plus Eldorado's SW couloir into Marble Cirque.
About This Trail
This route links Klawatti Peak's south face with the southwest couloir off Eldorado Peak, both accessed from the standard Eldorado approach via the Cascade River Road. The day climbs onto the Eldorado Icecap, traverses to ski the south face of Klawatti, returns to summit Eldorado, and drops the SW couloir into Marble Cirque before working back to the trailhead.
Skiing combines two distinct aspects in a single push. Klawatti's south face delivers spring corn on the right cycle. The Eldorado SW couloir is steeper and demands attention to overhead hanging snow above. Marble Cirque skiing rolls out below for the return. Skiers can extend by exploring the broader Marble Royal Loop terrain on the same approach.
This is committing terrain on the Eldorado Icecap. Glacier travel requires rope team and crevasse rescue gear. Spring corn windows are tight — too early risks instability, too late opens crevasse fields and increases overhead hangfire concerns. Eldorado approach river crossing can run high in spring runoff.
South-facing corn skiing on Klawatti combined with sustained SW couloir off Eldorado. Glacier transitions on Eldorado Icecap throughout.
Standard Eldorado approach skin track. Trail-breaking through icecap to Klawatti and the couloir entrance.
Seasonal Highlights
Astronomy
Trail Conditions
Scorecard
Few parties attempt the linkup in any season. Most Eldorado skiers stick to the standard summit route.
Safety & Considerations
Today's Hazard
- Strong sun — sunscreen, hat, and sunglasses recommended
Persistent Hazards
- Glacier travel on Eldorado Icecap with crevasse exposure
- Overhead hanging snow above the SW couloir
- River crossing on approach may run high in spring
- Late-day solar mush on return descent
- Triad-Eldo col exit involves rappel commitment if used
Getting There
Eldorado trailhead at the end of Cascade River Road. National Park Pass required.
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