Tod Crag cup and ring marked stone (Elsdon) - Source of Reference
(2) Beckensall, S., 1983. Northumberland's Prehistoric Rock Carvings (Rothbury), 53, 221-2.
(3) Beckensall, S., 1974. The Prehistoric Carved Rocks of Northumberland (Newcastle upon Tyne), 74.
(4) Beckensall, S., 1992. Prehistoric Rock Motifs of Northumberland, Volume 2 (Hexham), 58.
(5) Unpublished sources were used to create this record. For further information about these sources please contact us quoting the following reference number:N9408.
(6) Further information about the protected nature of this monument can be obtained from here.