Cup marked stone (Hartleyburn) - Source of Reference
The information on this website is based on a range of published and unpublished works. Below is a list of the source of information used in writing this record.
(1) Field Investigators Comments F1 ISS 01-MAY-1979
(2) North of the Wall Tynedale Archaeology Group, 2017. Tynedale Rock Art Gazetteer.
(3) This record includes National Record of the Historic Environment Information provided by Historic England on 4 January 2021 licensed under the Open Government Licence [http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/]
(3a) Beckensall, S., 2001. Prehistoric Rock Art in Northumberland, 123