[3] After Nottingham, Boardman obtained a Postgraduate Certificate in Education (English and outdoor activities) from the University College of North Wales in 1973.
After the Changabang expedition in 1976 Hilary arranged for Boardman to give a slide show at Belper High School where she was the teacher responsible for outdoor activities.
Hilary left Britain to take up a teaching position in Switzerland where she was later joined by Boardman when he took over as Director of the International School of Mountaineering in Leysin.
His early climbs included: Boardman's first expedition outside Europe was with fellow members of the Nottingham University Mountaineering Club who drove overland to the Hindu Kush in Afghanistan in the summer of 1972.
[22][23] An attempt on Denali was abandoned when O'Donovan became ill.[24] When Chris Bonington was recruiting for the large, siege-style expedition to climb the South West Face of Everest, Boardman was recommended by Paul Braithwaite as a talented climber who would be compatible with other team members.
[25][26][27][28][29] Boardman and Joe Tasker, on their first expedition together, made the first ascent of the West Wall of Changabang (6,864m) in the Garhwal Himalaya in India.
The team was composed of climbers Paul Braithwaite, Nick Estcourt, Doug Scott and Joe Tasker, as well as a doctor, Jim Duff, and cameraman Tony Riley.
[37][38][39][40] In December 1978 Boardman and Hilary Collins made the first ascent of the South Face of Carstensz Pyramid (4,884m) in the Indonesian province of Papua on the island of New Guinea.
In early January 1979 they climbed the nearby peak Dugundugu and, with two French climbers, traversed the three summits of Ngga Pulu.
[43][44][45][46][47][48][49][50] Boardman led an Anglo-Nepalese expedition to make the first ascent of the southern summit of Gauri Sankar, a twin-peaked mountain in Nepal.
The team composed of Boardman, Pemba Lama, Tim Leach and Guy Neithardt reached the South Summit (7,010m) on 9 November 1979 via the West Ridge.
On their second attempt on this route, they reached a height of 8,077m but their tent was overwhelmed by an avalanche in the middle of the night leading to a lengthy and precarious retreat off the mountain.
After suffering a second stroke at Base Camp, and following medical advice, Renshaw left to return home accompanied by Clarke as far as Chengdu.
He intended to climb to the North Col with Gordon and wait there while Boardman and Tasker made a final push to cross the Three Pinnacles.
By the beginning of June the expedition was back at Base Camp and Bonington travelled to Chengdu to break the news of the deaths to Boardman and Tasker's families.
In August 1988, Russell Brice and Harry Taylor succeeded in crossing the Pinnacles, thus completing the unclimbed section of the route, before descending via the North Ridge.
[78] Photographs taken by Vladimir Suviga[79] and sent to Chris Bonington enabled the body to be identified, from the clothing and features, as Peter Boardman.
[84] A second book, Sacred Summits, detailing his climbing exploits in 1979 on Carstensz Pyramid, Kangchenjunga and Gauri Sankar, was published posthumously.