You may remember we featured John Myatt from Gloucester, who has set out today to walk from the North Sea Coast to walk Hadrian's Wall dressed in not a lot apart from swimming trunks and a Roman helmet.
You can track his progress here.
A swimmer who has competed in freezing water for Britain, is about to walk the length of Hadrian's Wall dressed only in a small pair of trunks and a Roman helmet.Copyright: BBC
John Myatt, from Gloucester, begins the challenge tomorrow and aims to complete a 73-mile route along the monument within four days.
Mr Myatt said he originally planned to wear more conventional clothing but a friend told him to make it more challenging.
Mr Myatt took part in the International Ice Swimming Championships in Russia, in 2019, and he will be trying to to raise money for the forces charity Rugby for Heroes.