The Infinite Spur

Pete Graham, Ben Silvestre and I had a great trip to the Central Alaska range in May. For all of the details with what’s hopefully lots of useful information see the post expedition report (copy below). See Pete’s blog for his take on the trip, and Trek and Mountain magazine for mine, in an edition soon.

The trip was great, fun times with good friends in beautiful mountains with occasionally adequate weather. Two memories stand out, one from years ago, one from recently. The first is of sitting in a bare room in a Sheffield terrace after a night out clubbing, the techno still raging and people still raving in the sweat-box of a basement downstairs. This being Sheffield and us being young and obsessed the conversation had moved onto dream alpine routes, and I remember Pete and I agreeing that the Moonflower Buttress on Hunter would be the Alaskan objective to go for, writing off the Infinite Spur as just too out there. It’s good to look back and see how perspectives have changed.

The second is of crawling across the glacier back to basecamp, five and a half days out, feeling fully worked. Over the previous hours and days of effort we had shared elation and suffering. Ben had put in a sterling effort putting the track in from our last bivvy, and I had taken over to thread a way between the crevasses back to the safety of our tent. After punching through into thigh deep snow (again), and the last of my sense of humor escaping, we regrouped. Pete gave me his last energy gel and Ben took over, plunging onwards into more knee-deep wading. this moment sums up the way in which trying hard on big, serious alpine routes brings people together, partners digging deep to look after each other in the knowledge that it’s the only way to get over the top and get back together safely.

From here I’ll let the photos do the talking.


Post Expedition Report(A little dry but hopefully useful for people planning future trips)


Ben Silvestre, Pete Graham and Will Harris


We split our expedition into two parts, the first intending to attempt new routes from the Thunder Glacier, and the second acclimatising on Denali’s west buttress before climbing the Infinite Spur on Mount Foraker. We were unsuccessful on the Thunder Glacier, with poor snow conditions and high levels of objective danger preventing all but one attempted line. We succeeded in making the 10th, and 1st british, ascent of the Infinite Spur. We encountered generally poor weather, with very few days of clear good conditions, having only one window of good weather which we used to climb the Spur.

May 2016

2- Arrive in Anchorage

3- Shopping in Anchorage AM, transfer to Talkeetna PM

4- National Parks briefing AM, flew onto Thunder Glacier PM

5- Scouted new routes on Thunder Glacier

6- Snow

7- Attempted new route on Pt 9000’

8- Light snow

9- Light snow

10- Flew from Thunder Glacier to Denali BC/ Kahiltna Glacier. Moved up to 7,800’ on Denali

11- Moved up to 11,000’ camp in poor weather

12- Carried a load to windy corner on west buttress route in poor weather

13- Moved camp up to 14,000’ on west buttress

14- Collected cache from windy corner

15- acclimatisation run to 16,000’

16- Acclimatisation run to 17,000’

17- Rest day

18- Rest day

19- Acclimatisation to 17,000’. Would have liked to go to summit but poor weather.

20- Storm

21- Moved from 14,000’ to base camp

22- Snow


24- Packed for the Infinite Spur

25- Approached the Spur in poor weather

26- Climbed to the base of the 2nd rock band on the Infinite Spur

27- Climbed to the top of the Knife edge ridge

28- Summited and descended most of the way to the Sultana ridge

29- Reversed the sultana ridge, descended most of Mt Croson before snow conditions forced us to wait for a refreeze.

30- Descend to BC. Eat and sleep.

31- Rest


1- Rest. Pete and Ben collect skis overnight

2- Snowing

3- Snow AM, fly out to Talkeetna late in evening.

Thunder Glacier

We had seen photos of potential new lines to be climbed on Thunder Mountain and on the south face of Hunter South. Unfortunately, whilst we found a number of potentially interesting lines, the entire Thunder cirque is threatened by a ring of high seracs which make much of the climbing unjustifiably dangerous, to our tastes at least. The unclimbed south face of Hunter South looks particularly dangerous, and sadly the unclimbed west face of Mount Providence, whilst impressive, has an objectively dangerous approach. We attempted to make an ascent of what would have been a 750m long mixed line on point 9000’, but were turned back after approximately 350m vertical by unconsolidated powder on rock. Up to here we found technical difficulties up to Scottish grade VI. We considered another possible line on Thunder Mountain itself, but after watching this avalanche opted to move on to the second part of our trip.

We we’re surprised by the snow accumulation on steep faces whilst in the Thunder cirque. When viewed from the summit of Foraker a month later the faces were much drier, perhaps giving potential mixed/rock climbing on Thunder.

Photo: Pt 9000’ on the right, We used the left of centre depression to access the central groove during our unsuccessful attempt.

Photo:  Thunder glacier cirque as seen from the summit ridge of Foraker. Much blacker by the end of May.

Infinite Spur

The Infinite Spur takes a direct line up the chaotic south face of Mount Foraker, soaring 2800m from the Lacuna glacier to the south summit. First climbed by Michael Kennedy and George Lowe over eleven days in June 1977, the route has since gained test-piece status. After a flurry of repeats at the turn of the century, the route received it’s last ascent in 2009 at the hands of the Swiss Anthamatten brothers. Whilst not as technically difficult as the nearby North Buttress of Mount Hunter, it’s scale combined with the lack of easy descent from Mount Foraker’s summit make for a committing venture.

After spending a day approaching the base of the route we crossed the bergschrund early on the morning of May 26th, climbing steep snow and mixed slopes before belaying at the base of the crux M5 mixed pitches. With these dispatched, and the end of Pete’s block, Ben took us up through the first rock band and to our first hacked bivi ledge. The early demise of this ledge saw us up and away before 1am, straight into the second rock band. More quality ice and mixed climbing led us up and onto the ice rib, where we were passed by Colin Haley and Rob Smith, on their way to making a record-breakingly fast ascent of the route. Colin would come back around for a mind-blowing solo of the route a few days later, describing a harrowing storm-bound descent as crossing the line into unacceptable danger. From here, two pitches of South Stack style choss led us through the black band and then to the top of the knife edge ridge, where we chopped an airy bivvy after 24 hours of the go.

After reluctantly climbing out of our two-person sleeping bag the three of us shared the lead up seemingly endless snow and ice slopes, to be confronted with bitingly strong winds on the summit ridge. Luckily the gusts abated and we reached the summit late on May 28th, bathed in golden dusk sunlight for a shared emotional moment, before beginning our descent of the Sultana ridge. After a night spent in a handy sheltered crevasse, and a day traversing the peaks of the Sultana, our precious weather window finally came to an end, leaving us descending Mount Crosson in typically Scottish conditions. A final three-hour bivvy spent waiting for waist-deep slush to refreeze and we were onto the Kahiltna glacier and back to base camp for a late lunch, feeling deeply sated by our intense experience.

Our ascent was the 10th of the route, the 9th completed the day before by Rob and Colin. We were the first Brits to climb the route. The experience of climbing such a big, committing route, has left us wanting more- we are keen to attempt something similar but unclimbed, and with this in mind are already looking towards a trip to Pakistan in 2017.


No accidents/illnesses to report.

Google Earth

Google earth is quite poor for the area visited, particularly the south side of Foraker/ Lacuna glacier, with images too bleached to be of use.



We shopped for food at Walmart in Anchorage.

Outdoor equipment was purchased from REI and AMH in Anchorage. Wide range of gear available. There is also a second hand gear/consignment store opposite REI that is worth a look.

There’s a great second hand book store, Titlewave, on the same row of shops as REI.


You must register 60 days in advance to purchase a permit to climb on Denali and Mt Foraker. Before entering the range climbers must attend a briefing session at the Talkeetna ranger station, which we found to be very helpful as our ranger was Mark Westman, who had himself made a previous ascent of the Infinite Spur.

SAT Phone

We hired a SAT phone from Satellite Phone Store, opposite REI.


We stayed at the Arctic Adventure Hostel, which is clean and reasonably priced.


The roadhouse breakfasts are justifiably famous, as are the fairly wild nights in the Fairview Inn…


We used Go Purple Transfers to take us and our baggage from Anchorage to Talkeetna. For the return journey we rented a hire car from Fairbanks, where we visited friends for a few days after completing our climb.


Gas canisters from REI in Anchorage, white gas for MSR stoves from TAT

Glacier Flights

We flew with Talkeetna Air Taxis. They’re the biggest outfit in the range, and are very friendly and helpful. They have a bunkhouse in Talkeetna that it is free to stay in when in town before and after climbing.

Waste Disposal

All rubbish was flown from the glacier. The National Park provides clean mountain cans for the disposal of human waste, which is then either flown out or deposited in a crevasse depending on location.


Expedition Costs:
Travel –

2,700 (International flights)

1,500 (Glacier flights, inc. bump from Thunder glacier to Kahiltna Basecamp)

300 (Shuttle between Anchorage and Talkeetna)
Food and Stores – 1,100
Peak Fees and Liaison Officer – 800
Insurance – 1,000
Other and contingency – 300

TOTAL: 7,700

Expedition Income:
Number of Members – 3
Amount of Personal Contributions –  4,450
Details of grants:

BMC – 1,000

MEF – 1,650

AC – 300

AAC – 300

TOTAL: 7,700



We used a three person Mountain Hardwear Trango 3 tent, which seems to be standard issue on Denali. We used a one-two person Black Diamond Hi-light single skin tent on Foraker, which was quite cosy with three people. We also used the fly from an old tent as a cooking shelter whilst at BC.

Sleeping Bags

Whilst climbing the Infinite Spur we shared two lighweight Rab sleeping bags between the three of us, zipping them together to make a large down quilt. For future trips whilst climbing as a three I would consider taking a purpose-made down quilt. We used larger, warmer, individual sleeping bags whilst at BC and on Denali’s West Buttress.


We used clothing from various manufacturers, but principally that supplied free of charge by Rab. Layering wise, we tended to use a base layer, fleece, hardshell, synthetic insulated layer, down jacket on the top half, and on the bottom half hard or softshell salopettes with either one or two layers underneath.


On the Spur we used two 60m half ropes, 1.5 sets of wires, DMM dragon cams small to large, a few birdbeaks and assorted pegs, 12 quickdraws, 2x 240cm slings for belays when leading in blocks.


We would like to thank Rab, DMM, Crux, Mountain house meals and Chia Charge energy bars for their generous support.


Alaska climbing, Supertopo guidebook, by Joe Puryear

High Alaska, by Jonathan Waterman

Supertopo forum thread for Infinite Spur.
If future teams want any extra info about the above then please feel free to get in touch:

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