Yes.

As far as I am aware there are a dozen or so around the Black Mountains (NOT the Black Mountain).

Using imagination and rumour the number goes up to around 20.

Boffins believe that this demonstrates the most westerly expansion of court tomb building culture into Wales.

Aren't you a Dyfed lad Kammer? So you'll be in a position to confirm or deny the lack of court tombs in that area.