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County Down adventurer Noel Hanna had to abandon a trek last month after five fellow climbers died.
County Down adventurer Noel Hanna had to abandon a trek last month after five fellow climbers died.
By Cormac Campbell
BBC News NI South-East Reporter
By Guy Hedgecoe
BBC News Moralzarzal, Spain
Documentary series which celebrates earth in all its glory. This edition looks at mountains, beginning with the birth of a mountain and ending at the summit of Everest.
Nepal and China agree that Mount Everest is now 86 cm (33.9 inches) higher than had been previously officially calculated.
By Navin Singh Khadka
Environment correspondent, BBC World Service
The Cumbrian mountaineer Sir Chris Bonington is taking part in a special fell walk today to mark the 45th anniversary of the day that two Britons climbed Mount Everest.
Doug Scott (pictured right) and Dougal Haston were the first to ascend the south-west face in 1975, and the first Britons to make the summit, in an expedition led by Sir Chris (left).
Today's climb is taking place on Carrock Fell, near Keswick, in aid of Doug Scott's charity, Community Action Nepal, which builds health centres and schools for the Nepalese people who work with mountaineers.
It is currently raising money to rebuild those provided over previous decades, because they were destroyed by the earthquake in 2015.
Martin Lewes
Reporter
The Cumbrian mountaineer Doug Scott, who with Dougal Haston was one of the first two Britons to climb the world's highest mountain Everest, is battling inoperable brain cancer and continuing to raise money for the charity he spent his life developing.
Doug, now 71, is seen here with his wife Trish opening a school in Nepal paid for by Community Action Nepal, which has built dozens of similar facilities and health centres in Himalayan villages.
Many were devastated in the 2015 earthquake, since when he has kept working to rebuild them, raising £2.5m and even last weekend climbing his staircase at home as part of an annual challenge event for the charity.
A spokesman for CAN said: "His illness is a terrible setback for his family and friends as well as CAN supporters in the UK and internationally, but he wants to see 'no let up' in the efforts to support and sustain the health, education and livelihoods of the mountain people of Nepal."
By Ben Philip
The Nine
By Navin Singh Khadka
Environment correspondent, BBC World Service
By Nia Cerys
BBC Wales News
Footage of the terrifying moment climbers were engulfed by snow in 2015 has been released.