Cup-marked boulder, Guestwick Hills, Hunderthwaite (Hunderthwaite) - Source of Reference
| No. | Originator(s) | Date | Title | Notes |
|---|---|---|---|---|
| 1 | Durham County Council, Northumberland County Council | 2005 | NADRAP Durham Box File 1 | Rock Art ID # 1749 |
| 2 | Brown, P | 2000 | Paul Brown, New Site |