Sir Ranulph Fiennes is battling vertigo to raise funds for Marie Curie Cancer Care.
The explorer Sir Ranulph Fiennes approached Marie Curie Cancer Care after losing three of his loved ones to cancer in 18 months, including his wife, Ginny.
Despite suffering from vertigo, he started climbing two years ago at the age of 60. His latest adventure will involve climbing the north face of the Eiger - 6,000 feet of sheer rock and ice in the Swiss Alps.
He aims to raise £1.5m for the Marie Curie Delivering Choice programme, which provides care for terminally ill people.
Fiennes says: "I have watched my nearest and dearest die of terminal illnesses, and I understand the big difference to a patient's morale and wellbeing when they can spend their last days in their own home. This initiative will enable more people to make this choice."
Matthew Eckford, fundraising manager for the programme, says: "Ran is very busy with training for the climb and his lecture calendar. He is great to work with and has many ideas from his years of working with charities in relation to his expeditions."