You pass this fella on the Three Howes Rigg to Commondale road.
The whole thing is in poor nick and If it wasn't for the stone on top of the thing you probably wouldn't give it a second glance. It's called a cairn on the OS map. I'm not sure if it is a cairn, the rabbits have just about collapsed the whole structure so I guess it's not made of stones. There are a number of large stones scattered and semi buried around it's periphery. I'm guessing that these could be the remains of a kerb.
In Summary, a messy site but the rabbits seem to like it that way. I like it too.