A charity that gives residential breaks to disadvantaged children is to become part of the Outward Bound Trust.
CCHF All About Kids, which was founded in 1884, will transfer £6m through a deed of gift to the trust.
CCHF’s income has fallen from £838,000 in 2013 to £673,000 in 2016.
Its trustees' report for the year ending 31 December 2016 said it was "imperative we change the current delivery model" and suggested working in partnership with another organisation with similar aims or becoming a grant-making charity.
Two years ago CCHF employed eight staff, but a restructure reduced the team to just Lydia Davis, the chief executive, and a part-time accountant.
Davis will become a consultant at the trust, whose board will welcome two CCHF trustees.
A spokeswoman said there would be no redundancies.
The decision to become part of the trust was "a natural next step in our organisation's journey", said Davis.
She added: "The trust was selected because of its clear goals and ethos, which are shared with CCHF, and the organisation’s strong commitment to helping young people learn and grow through wilderness adventures in the UK’s most challenging landscapes."
The trust, which was founded in 1941, has increased its income from £12.3m in 2013 to £16.8m in 2016.
CCHF's deed of gift will finance bursaries and help to acquire a new centre providing 7,000 places a year for young people.
Nick Barrett, chief executive of the trust, said: "We are confident that the move will bring significant benefits to the organisation and to the young people we engage with."