As our Land Cruiser sped off down toward the nine-tent Olakira Camp, the sheer scale of the landscape unfolded, the spiny flat-tops of the acacia trees dotting undulating fields of grass and gentle hills rolling out to wide open vistas of scruffy brush.

BBC: The Serengeti in the off-season

On a flat-topped hill overlooking the sprawling city of Los Angeles, the grass has been worn bare by thousands of eager feet.

BBC: The road to Hollywood, California

The volunteers are expected to carry out the full duties of the paid wardens - driving the tractor, mowing the grass, looking after the island's sheep, carrying out DIY and maintenance work on Flat Holm's buildings, and leading tours of visitors.

BBC: South East Wales - Volunteers wanted for island life