Happy Valley, so many stones , so much rock art, so many cairns.

I think you've got the pic in the right place Kammer,

Logical(ish) reasoning process:
There's no trees, so it can't be Ri Cruin.
There's no chamber stone at the top, so it can't be Nether Largie South.
It's too tall to be Nether Largie Central.
It's got a fence around it, so it can't be Glebe.
It's not on it's tod, and there's no trees, so it couldn't be Dunchraigaig.

It has to be Nether Largie North.

You could extend the description if you wanted because I think you've nicely caught the Càrn Bàn cairn on the top of the hill right at the back thus bringing in the far end of the linear cemetery.