A team of vets is set to take on the National Three Peaks Challenge.
The challenge involves climbing the highest mountains in England, Scotland, and Wales.
The team from Nene Veterinary Group, which has surgeries in Peterborough, March, and Wisbech, will attempt the feat over the first May Bank Holiday weekend.
They will scale Scafell Pike in the Lake District (978m), Ben Nevis in Scotland (1,345m), and Yr Wyddfa (Snowdon) in Wales (1,085m).
If successful, they will have walked 23 miles and ascended 3,064m over three days.
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The challenge is being organised by vet and clinical director Robert Culen, who will be joined by vet Giuseppe Palatucci, head nurse Tanya de Mare, and surgeon Ricardo Quacquarelli.
Mr Culen said: "Completing the Three Peaks Challenge will be tough, but I wanted to do something that was challenging to help encourage as many donations as possible.
"We’re fundraising for two great causes and I know them personally because I have volunteered for both organisations."
The team is raising money for Peterborough Sailability, a charity that enables children and adults with disabilities to enjoy sailing, and the Centrum Socialnych Sluzieb Orava in Slovakia, which provides support to children and adults with autism and their families.
Mr Culen added: "I help out at Peterborough Sailability every Tuesday and it’s such a great charity because it allows more people to experience the joy and freedom of being on the water.
"I am also raising money for the Centre Orava in Slovakia, which I’ve supported since I was a student.
"It provides daycare facilities and activities and services to improve the lives of children and adults with autism and it is such an important place to the 160 people who go there and their families."
Donations can be made on Mr Culen's fundraising page.
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