Yarlsber camp sits at the foot of Ingleborough, sandwiched between Easegill force and the B6480 to Clapham.
The site is thought to be an Iron Age defended enclosure. It covers about an acre and a half, and is surrounded by earthworks. At the lower end of the site, the earthworks are worn and low, whilst at the top, they are very well defined and up to a foot high. The defences at the top of the site are also double ditched with shallow ramparts…possibly the remains of entrances.
The site has been excavated and investigated, but no signs of habitation were found within the earthworks. Stone was discovered beneath the earth ramparts, but was not datable.
It is assumed that this site is similar in age to the fort on top of Ingleborough, ie Brigantian, although where this assumption came from, I'm not sure.