Prelude [05/07/2025]
Driving from Geneva to Chamonix Aiguille du Bionassay appears tall on the side of Mont Blanc, almost lost on the giants shoulder yet undeniably distinct none-the-less. Despite its prominent location it is invisible from Chamonix and hard to access, requiring a very long day and hard effort to even get near.Â
The prelude to my solo of the Aiguille de Bionnassay was an exercise in active rest. It began after summiting Mont Blanc via the Trois Monts. As my partner, Ben, began the colossal 3,500-metre descent back to the valley floor, I made a different calculation. Knowing the Bionnassay was next on my list for the âClimb Against Timeâ challenge, my quest to summit forty-one of the Alpsâ 4,000-metre peaks this season for a future free from dialysis (we want to build an artificial kidney), I opted to stay at the GoĂ»ter hut. The energy saved would be a critical investment.
The following morning, after an easy two-hour descent, I arrived in Chamonix and had a relaxed day with Ben. The first order of business the following day was a logistical headache, retrieving my bivvy gear and surplus rock gear I had stashed at the Refuge des Cosmiques. That meant buying a lift ticket for the Aiguille du Midi, ascending, descending the arĂȘte to the hut, grabbing my gear, and reversing the whole process. The day after a major climb, my body protested this frustrating, energy-sapping affair.
By 1 pm, with my pack now laden with gear, the real approach began. I had called the Plan Glacier refuge repeatedly, but with no answer I was heading in blind, so I packed my bivvy gear as a contingency. A solo attempt means carrying the full weight of safety yourself: a 50-metre rope for the abseils, a light rack of cams and wires, and a snow picket for suspect bridges. The load is heavier, but life, simpler. With no partner call answered, I would be alone. It was a welcome change. Success or failure would be contingent on me, and me alone.
Plan Glacier RefugeÂ
The hike to the Plan Glacier refuge was idyllic. After leaving the car, I took the lift to Bellevue and began the walk, crossing paths with hikers on the Tour du Mont Blanc. A pang of nostalgia, the simplicity of their journey, a hard dayâs walk followed by a warm meal and sleep in a tent or a hut, free from the sharp-edged stress of the high mountains. For me, my mountain, the Aiguille de Bionnassay, loomed ahead, towering, its 4,052-metre summit looking down from behind glaciated curtains. It felt as massive and remote as anything in the Mont Blanc massif.
After four hours, as dusk settled around 9 pm, I finally saw it: the Plan Glacier refuge. Perched on the mountainside, the fourteen-bed timber outpost felt like a Himalayan teahouse plucked from my imagination. To my relief, the hut keeper confirmed he had a bed. So soon, I boiled water for a dehydrated meal and sat outside, gazing at the panorama. The sun had set, casting a deep blue hue over the landscape. The Domes de Miages sat as giants to my side as the moon rose above them. I felt tired but not broken; there was no âpop,â each step deliberate, but I was here, here in this almost sacred side of the Massif, that was scared by no lifts nor pistes.Â
My primary concern was not the technical rock climbing, French 4, well within my abilities, but the solo glacier crossing. To cross a crevassed glacier alone is to court oblivion. A fall is final. You simply disappear into the ice, a self-burial with no ceremony. I asked the hut keeper about conditions.
âThere is a path, but it is alpine, you know?â he said, gauging whether I was capable or reckless. I told him I was equipped and had been in the valley for weeks, which seemed to satisfy him. The glacier, he explained, was west-facing and held in shadow until late morning, so an extremely early start was unnecessary to avoid soft snow. âBut be careful of rockfall if you cross too late,â he warned. I then crawled into my bunk, sleeping a solid eight solid hours.
The next morning, after a meagre but welcome breakfast, I stowed my bivvy gear and made my way to the glacier. A small jump got me over the bergschrund and onto the ice. I moved fast, probing with my axe, senses on high alert, trusting a mix of experience and hope that nothing would break beneath me. The final section, steepening towards the opposing rock wall, was more heavily crevassed, but the snow bridges felt solid. Another jump, and I was across. My heart was racing. This was the psychological crux.
DurierÂ
From there, it was a 500-metre vertical slog up a rib of loose, unpleasant rock to the Refuge Durier. I moved slowly and steadily, conserving energy, arriving after two and a half hours as the first climber of the day. âJust you?â asked Marion, the hut keeper, appearing at the door with a bowl of dough in her hands. âYes.â âYour plan?â she asked, kneading rhythmically. âThe Bionnassay tomorrow.â âOkay. House rules: crampons outside. Do not shit or piss on the snow, I melt it for water. Use the toilet.â Firm, but fair.
Soon the small fourteen-bed hut filled with other climbers, most planning the full Royal Traverse. A family caught my eye, mother, father, and their teenage son, also heading for Mont Blanc. The boy was fascinated by crystals, and I could not blame him. Marionâs partner, a crystal hunter, brought out his collection. Though I could not communicate in French, we shared a mutual appreciation as the boy gazed at the quartz glittering in the afternoon sun.
Dinner was a delight as Marion served soup with her homemade bread, one of the best I have tasted, salty, dense, and perfect for replenishing the dayâs exertion. Sausages and lentils followed, an unexpected luxury at 3,350 metres. Mindful of the others, I ate my fill and crawled into my bunk. As the sun went down, I watched from the window. If the Durier is famous for anything, it should be for its sunsets, a phenomenal dance of colours, the fiery sun bleeding into the blue blanket of cloud below, framed by the stark white of the mountains. A perfect descent into the oblivion of night.
The Climb
I woke at 2 am, ate more of that magnificent bread, and departed at 3 am into the cold darkness. I walked slowly, finding rhythm. Around 5 am, as I neared the start of the technical climbing, I saw it. About fifty kilometres away over Italy a storm cell was raging, a silent, violent tempest contained in a celestial jar. Bolt after bolt of lightning illuminated the clouds from within. The horizon was otherwise clear. It set a dramatic, almost sacred ambience for the crux ahead.
The first move off the snow onto the rock was the hardest at grade IV. A fall here would be unforgiving. I climbed slowly and deliberately thereafter mostly at grade III, crampons scraping granite, feeling for every hold. A French climber ahead of me called out now and then, âAre you okay?â I certainly was, but I appreciated the gesture. At the top of the rock band, I bypassed a small overhang with a short traverse and a scramble, there was however a much easier option just a bit below which I noted for the descent.Â
From there, a final snow arĂȘte led to the summit. One of the most stunning summits of my life. The knife-edge ridge stretched ahead, plunging towards the Col de Bionnassay. Peering over the edge, I could see through the clouds to the valley and the very hiking trails I had walked two days before. I teared up at this summit. It had taken me considerable effort to get here, another peak was down, the beautiful peak of Bionassay.
But the celebration was premature. The summit is only halfway. I descended quickly, making three abseils down the rock section. On the rocky bastion of the Bionassay I found an alpine cleft with large quartz crystals which I pocketed, then regrettably, left at the Durier. Making my way down the rock rib I again had the glacier crossing, I heard rocks already tumbling on the glacier. I crossed fast and after collecting my bivvy gear and refuelling with a Coke and some energy bars at Plan Glacier Refuge, I started the final leg. At the Col de Tricot, hikers told me the last Bellevue lift down was at 5:30 pm. I looked at my watch and it was 3 pm.
I started sprinting downhill. By 4:30 pm I was at the lift station, exhausted but relieved. A successful tour on a magnificent mountain. Everything had come together.
4 down, 37 to go