A former Royal Marine who successfully scaled three of the UK's highest peaks, while carrying a rowing machine, is attempting to go one better.
Matthew Disney set off on Friday to climb western Europe's highest mountain, Mont Blanc.
His intention is to get the machine to the top and then row the height of the mountain - 4,810 metres.
Mr Disney is taking on the challenge to raise money for two military charities, Rock 2 Recovery and The Royal Marines Charity.
So far, he has raised more than £15,000.
When asked why he was taking the rowing machine up Mont Blanc, Mr Disney said: "It provokes the question, by provoking the question it's then meant that I've grabbed the person's attention and by doing so, that means it's increased the awareness of the two good causes."
Earlier this year, Mr Disney completed the Three Peaks challenge.
Over 13 days, he climbed 25,000 feet as he scaled Scotland, Wales and England's highest peaks and tackling the British elements which he said "was a challenge itself".
"This one will be significantly less in distance, but the altitude climb is significantly higher," Mr Disney said.
When asked about the dangers, he said: "There are four main things- avalanches, crevasses, rock-fall and then altitude sickness."
The adventurer is hoping to finish by Sunday.