A small level on the hillside north of Blaenavon. Remains on site include a run in level with a spoil tip. There is also an extant drainage level lower down (shown on OS maps.) This level is lined with stone but collapsed shortly inside. See Industrial Gwent link below for photos.
1887 National red Ash Colliery Co
1888-92 Marquis Red Ash Colliery Co
The mine worked the Tillery Seam