The minor road running south from the main A40 to the village of Llangynog passes right past this site (on the left). You can park at the entrance to Pen Lan Farm and a metal field gate directly opposite gives access.
There is little to see; other than obvious undulations under the grass.
There is another enclosure a little to the south east which I didn’t look at.
‘Bwlch-y-Seiri is an oval enclosure, about 56m east-west by 44m, defined by a bank, ditch and counterscarp, having a circular ditched mound, about 30m in diameter immediately adjacent on the west, the whole occupying the nub of a west facing spur’.