Ben Cheek failed to return from a solo attempt to reach the summit of the Shimshal Whitehorn (6303m) last month and is believed to have died in an avalanche.
The 28-year-old biologist, who lived and worked in Manchester but grew up in the Ettrick Valley and attended Selkirk High School, was the son of Mick and Heather Cheek, who now live in Gordon.
The Cheeks are still struggling to come to terms with Ben's loss, but his sister Laura outlined their plans for a project in memory of the youngest member of their family.
"We would like to set up a trust in memory of Benjie. He was so touched by the kindness of the people he met in northern Pakistan and so many people in Pakistan have been kind enough to tell us that he greatly touched them with his warmth and compassion, and, of course, his great sense of humour," she explained.
"One of the last accounts we have is of Benjie playing with the children of one of the expedition's local guides, as usual making great friends and entertaining wherever he went.
"Therefore, after much consideration, we have decided that SOS Children would be the perfect charity to help us to honour Benjie.
"SOS Children have built many amazing villages for orphans all over the world. We intend to select one particular village project in the north of Pakistan, which we will be able to support, and we will therefore know that all the funds we raise will be going to one special place in honour of Benjie.
"As a family, we hope to visit Benjie's mountain in Pakistan and to meet the people who helped to search for Benjie. We would also visit the children's village and see how we have helped it to grow. We are certain that this would make Benjie so proud."
That village project has now been selected – it is to be the new facility to be built in Rawalakot. Money donated in memory of Ben will be earmarked to build family homes there for children left orphaned by the 2005 earthquake and who are currently being cared for in Dhodial and Lahore children's villages.
Other orphaned and vulnerable children are being identified all the time and will find a new home at Rawalakot, when built.
SOS Children is the world's largest orphan and abandoned children charity. Supported by sponsors and donors worldwide, the charity provides a new family – in 473 children's villages – for more than 70,000 children in 123 countries and helps almost a million more people through its projects around the world.
Its main role is helping children whose parents are not there for them. These can be AIDS orphans, street children, child soldiers or children orphaned by war, poverty or natural disasters.
Ben's father, Mick, says it has been a difficult time for the family accepting that Ben will not be coming home.
"We all planted a tree in Gordon community woodland as a way of remembering Benjie," said Mr Cheek.
"It will be a place for us to go to remember him. Even now, we are all finding it so hard to face the fact that we will not see him again. He was a ray of sunshine wherever he went, so full of life, fun and laughter – always looking for the next challenge, living every moment to the full.
"I remember the last words I said to him – 'we're so proud of what you are doing Benj'. But alas, little did I realise that he was going to attempt the nigh on impossible – to climb the north face of a mountain by himself that had never been climbed before from that side, and that has claimed the lives of many other mountaineers, far more experienced than him.
"He was so courageous, fearless and strong, both in body and mind, that he probably really thought that he could do it, and maybe it was just bad luck that an avalanche caught him.
"We have some consolation knowing that he died doing what he loved. But a gaping hole has been left in all our lives. Cards, flowers and letters of sympathy and support have been arriving every day, and we have been overwhelmed by the number of cards from Benjie's friends."
If readers would like to make a donation, they can do so online at www.justgiving.com/bencheek or send a cheque made payable to SOS Children, marked for the Ben Cheek project in Rawalakot, to SOS Children's Villages UK, St Andrew's House, 59 St Andrew's Street, Cambridge, CB2 3BZ.