Skywalk Buttress - Combatant

From a base camp at Sunny Knob, low on the Tiedemann Glacier, all four members of our motley band (myself, Forest Woodward, Graham Zimmerman, and Scott Bennett) packed for 4 or 5 days and headed up to the Waddington Tiedemann Col (edit, Wadd/Combatant Col).

Skywalk Buttress on the SW Peak of Combatant
We occasionally caught the tracks of our friend Colin Haley, who'd tromped up the glacier solo a couple days prior, after flying into a spot farther east. We planned on only having to end-run a few big cracks, but we ended up too high on the left side of the upper glacier, cut off from our intended route and running out of light. We set up camp between crevasses and began the next morning with a bit of downclimbing and a rightward traverse below the rock tower that divides the upper glacier. 

Waking up after our surprise night on the upper Tiedemann, Bravo Peak behind.

Forest self-belays on a grigri, bollard anchor in place.
Navigating the upper glacier was slow and tedious, requiring a few sections of two-tool climbing. We managed to (mostly) make it through before the sun came high in the sky, but the icefall faces due east, so gets early light.

The Waddington Tiedemann col is an enormous plain of snow, fringed to the North and South by bergschrunds, moats, and peaks thousands of feet above. To the East and West, the horizon drops precipitously. It's exemplary of a natural wind tunnel.

Setting up at the col, McNerthney Pillar in top right.

We got our tents set up and made a late breakfast, quickly racking for the climb. 

Ice start in center
I lead up a short bit of vertical slush through the bergschrund, and belayed the three others up off a rock-pro and sno bollard anchor, tagging the ice tools down each time. Forest and Scott began via the 5.10- Gilmore/Mahoney left-side start, and with ice tools and boots, I lead the traditional ice start, finding easy water ice and fun mixed rambling for 2 pitches or so.

 Graham just "hand jugged" the rope when he couldn't climb nearby rock in his approach shoes.
Graham hand-over-hands on an ice section of the Skywalk.

Our two variations soon met up on the crest, and both teams cruised pitch-after-pitch of 5.8 and 5.9 climbing. 
Graham on the first rock pitch, overhanging patina face climbing!
We took the zig-left, zag-right variation roughly 1/3 of the way up, and a huge belay terrace on the crest provided another nice landmark, 2/3 of the way up.

Between these two landmarks, we encountered our only route-finding issue. In the vicinity of several large square roofs, climb rightward across a gray slab, and blindly move around the prow into a hidden right-facing corner. This corner makes up one of the best pitches on route.

We all finished via a novelty overhanging boulder-problem on the crest, and celebrated with some snacks and a discussion of how tiny our expedition tents appeared (identical to dust specs in our photos).

We rappeled roughly 105 meters down East from the summit, then made many raps down the fall line (Southish), attempting to stay on the rock ribs that separated snow and ice couloirs, skier's right of the great Combatant Couloir. We didn't find much in the way of anchors, but I did recover a couple antique slung stoppers. Forest got a lesson in night rappels, as we employed everything from V-threads to bollards, bootied pins, and bashed-in wires to make it down and over the moat and bergschrund.

Overall I'd describe the route as an excellent granite-ish face climb in an unforgettable location atop the range. It reminded me of climbing the West Pillar of Cerro Pollone in Patagonia, although it was much lower-angled and easier, and didn't feature as many crack systems. The rock is impeccably clean, and although no single pitch would stand out as an excellent cragging route, they each provided stretches of truly enjoyable climbing.

Graham, and Perseverance's prow.
We had hoped to attempt the 2nd ascent of Perseverance (Cusick-Kearney), also on Combatant, but a worsening weather forecast and a closeup view of the route dissuaded us from an attempt. In addition to  difficulties getting to the rock, the route appeared to feature sustained down-sloping holds and slabs, interspersed with small overlaps. 

It (and Belligerence) also intersect a large scree and talus bench on which one could walk from the col, detracting from the commitment and singularity of the route high on the face. On Waddington's side of the col, the McNerthy Pillar and the ice/snow route just left of it both appeared compelling objectives without anything close to an "early escape" option.

Leaving the col to begins our raps
To return down the Tiedemann, we made 2 rappels and some downclimbing from atop the rocky tower that divides the upper glacier.

 We veered skier's left, walked on snow beneath Perseverance and the Incisor/Belligerence.


The four of us made it to Sunny Knob at dark with only one hair-raising moment as a HUGE serac-a-valanche swept off of Waddington and started a temporary Niagra falls of slushy mountain debris. We were never within its path, but from our jumbled vantage point, it was easy to believe otherwise.


  1. really good and inspirational post.

  2. Sounds like a great trip. I was there a few years ago and was blown away by the scale of everything.

    One correction: the col is Wadd-Combatant, not Wadd-Tiedeman.

  3. Woops! you are obviously correct, that's a pretty important difference.