Visited on a clear but very cold January day, the settlement at Catshole requires a bit of hunting. From the western side of the outcrops look for the remains of a square enclosure and ruined building (all very low), the settlement is to the north of them.
There are supposedly 12 hut circles/storage buildings in the complex, myself and Mrs Hamhead found five without looking too hard...and were too cold to search for the rest. The huts make great use of the natural rocks as walls..but this also leads to confusion over which are huts and which are just natural formations.
The two most westerly huts I thought to be cairns, they are just a collection of stones with a few uprights around the edges and would have been very small buildings.
I know nothing about this site - just what I saw on the OS map - and haven't seen it mentioned in any of my books. Given that the area is littered with a variety of settlements, I imagine this is pretty much the same as others. I walked through the area on the map but couldn't see anything obvious. The ground in this field is very uneven and hard work and by now I was too knackered to look too hard!