Devon commando course tests endurance
More than 3,500 people have tackled a Royal Marines assault course to raise money for local causes.
The two-day Commando Challenge on Woodbury Common raised money for the Devon Air Ambulance and for a charity called the C-Group, supporting injured Royal Marines.
The Devon Air Ambulance Trust says it is hoping the challenge will boost its income by about £300,000.
It is the 21st anniversary of the event which has raised more than £2m.
The event started in 1990 when 80 people took part in a 3km running course including the assault course.
It has now grown to courses of 4km and 10km every October and another 17km course in May, with entrants coming from as far as Cyprus and Australia.
Organiser Alan Hardy said: "When the event first started 21 years ago, we had no idea how much of a success it would be.
"It's hard work, and wouldn't be possible without all of the volunteer helpers over the two days, but it's also very rewarding and a lot of fun."