A mountain climber ascends a dramatically steep snow ridge on Eldorado Peak in the North Cascades
Craig climbing final snow arete on Eldorado Peak

Eldorado Peak via Sibley Creek Pass—Triad Glacier—Eldorado Glacier—Inspiration Glacier (Thunder Mountains, WA)

Trip Date: September 11-12, 1993

Eldorado Peak Climbing Trip

Sibley Creek Pass
Triad Glacier
Eldorado Glacier
Inspiration Glacier
Eldorado Peak (8868/8873 ft)

Trip Report Summary

Region: Northwestern Washington Cascades

Sub-Region: Thunder Mountains

Area: North Cascades National Park

Starting & Ending Point: Hidden Lake Trailhead at end of Sibley Creek Road #1540 (Elev. 3600 feet)

Way Points: East Fork Sibley Creek & Sibley Creek Pass & Sibley Knoll & West Triad Col (trail hike & off-trail hike & rock scramble)

Campsite: West Triad Col (Elev. 7000 feet)

Sidetrip: Triad Glacier & East Triad Col & Triad Ridge Saddle & Eldorado Peak summit (snow climb & rock scramble)

Summit: Eldorado Peak (snow climb via Eldorado Glacier—East Rib—Upper Inspiration Glacier)

Approximate Stats: 15 miles traveled; 6000 feet gained & lost.

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Full Trip Report

Day 1 (PM): Trailhead to Triad Glacier

Craig and I headed out from the Hidden Lake Trailhead around noon on an overcast Saturday.  We hiked up the trail to a point at Elev. 5400 feet, where it begins a long southwesterly traverse across the hillside.  There, we left the trail and hiked directly up steep, meadowy slopes to 6200-foot Sibley Creek Pass, then we turned left and followed a footpath up the northern side of the pass.  This footpath gained the crest of a grassy ridge leading over toward The Triad.  A long up-and-down hike along the crest ended at a narrow, rocky col immediately below West Triad.  We scrambled down from this col and, shortly before dark, pitched our tent on a flattish area atop the Triad Glacier at about 7000 feet.

Base Camp At West Triad Col

Day 2 (AM & PM): Eldorado Peak Summit Climb

After a frigid night, we awoke to find several inches of fresh snow blanketing the rocks and snowfield. Eldorado Peak was visible across Marble Creek Cirque, about 3 miles away and looking quite foreboding with its dark, snow-dusted rock.

Eldorado Peak From Base Camp

We began traversing across the Triad Glacier, which consisted of rock-hard ice under fresh snow.  Once past all three Triad peaks, we were able to scramble up some ice-coated rock leading to a another col immediately east of East Triad.  Morning sun was highlighting the line of snowy summits to our north and east.

Fresh Snow On Northwestern Cascades
View South From East Triad Col
Forbidden Peak From East Triad Col

After scrambling down the other side of the col, we continued traversing in a northeasterly direction across unstable, snow-covered talus.  It was a great relief to finally get off this treacherous slope and set foot on snowfields.  We donned crampons and proceeded across the Roush Creek Cirque, generally aiming for the Eldorado-Inspiration Saddle.

Traversing Roush Creek Cirque
Craig and Hidden Lake Peak
Ascending Roush Creek Cirque
Traversing Roush Creek Cirque
Heading For Eldorado-Inspiration Saddle

Our views steadily improved as the cloud cover dissipated.  We eventually gained the Eldorado Glacier and crossed through the Eldorado-Inspiration Saddle, then began angling steeply upward on the Inspiration Glacier.  The views across Moraine Lake to Forbidden Peak were spectacular!

Looking Across Eldorado Glacier Slabs
Looking Over At Cascade Pass
Snowking Mtn and The Triad
Craig, Mt Logan, and Forbidden Peak
Jim and Point 7292
Forbidden Peak Above Moraine Lake

Our ascent was fairly moderate at first but gradually became quite steep and icy, so we roped up.  The summit appeared to be a benign snow dome at the top of this slope, so we had no inkling of what lay ahead.

Looking Up At Eldorado Peak Summit Dome
Cramponing Up East Face
Craig High On Inspiration Glacier

I had taken the lead on the Inspiration Glacier and was completely surprised when the glacier slope abruptly ended at a knife-edge snow arete.  Wow!  I belayed Craig up to my position, and we both stood there with our eyes and jaws wide open.  The snow arete swept upward to join an adjacent arete, thereby forming a perfect pyramid.  It looked like something you would expect in the Himalayas or Andes!  Craig took the lead and carefully cramponed up the arete, first staying just right of the edge and then crossing over to the left side. We were wishing that we’d brought some pickets or ice screws, so it was an unspoken agreement that if he fell on one side, I would lunge to the opposite side.

Craig On Eldorado Peak Summit Arete
Craig On Eldorado Peak Summit Arete

When the rope went taut, I followed Craig’s crampon marks up the arete.  The  climbing was incredibly exposed but incredibly scintillating!  At the top of the pyramid, the arete became nearly horizontal, and I saw Craig strolling along the right side of the crest, about 50 yards away.  He stopped on a tiny point of snow and reeled me in.

Craig On Eldorado Peak Summit Arete
Hidden Lake Peak and The Triad From Eldorado Peak Summit
Mt Logan To Boston Peak Pano From Eldorado Peak Summit

Day 2 (Late PM): Summit to Trailhead

This incredible summit demanded a long stay, but it was now mid-afternoon and we had a long descent ahead of us.  Somewhat reluctantly, we began retracing our up-route along the arete and down the glaciers.  Thankfully, today’s sunny weather had melted all fresh snow off the talus and all ice from the col, so we were able to move much more quickly.  Nonetheless, it was early evening when we reached our campsite below West Triad Col.

Craig Descending Eldorado Peak Summit Arete
Traversing Triad Glacier

We hastily packed up our tent and headed back along the grassy ridge.  Headlamps came out in mid-traverse.  To complete a day of alpine surprises and delights, we were treated to a grand display of the Northern Lights as we neared Sibley Creek Pass!

Evening Sun On Eldorado Peak
Evening Sun On Backbone Ridge

Somewhere around midnight, we stumbled into the trailhead, feeling exhausted but satisfied.  It took Craig and me many more days to fully process this one long, incredible day in the mountains.

Click to enlarge…