Cup- and groove-marked boulder, Osmaril Gill, Barningham Moor, Teesdale (Barningham Moor) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | Northumberland County Council, Durham County Council | 2006 | NADRAP Durham Box File 4 | Rock Art ID # 890 |
| 2 | Beckensall, S | 1980 to 1997 | Photograph of a boulder with 8 cup-markings, Osmaril Gill, Barningham Moor, Teesdale | |
| 3 | Beckensall, S | 1980 to 1997 | Illustration of a cup-and-groove-marked boulder, Osmaril Gill, Barningham Moor, Teesdale | |
| 4 | Gledhill, T, Nichol, R | 1997 to 1997 | Monuments Protection Programme (MPP) County Durham Accelerated Scheduling Programme Folder: MPP Barningham Moor Fieldforms Jan-March 1997 | AI number: 146121 Date of Visit: 15/02/1997 |