See:
- Ian Armt, Hillforts at war: from Maiden Castle to Taniwaha pā in: Proceedings of the Prehistoric Society 73, 2007, pp. 25-38 - https://www.academia.edu/9722868
- http://www.coast-alive.eu/content/ancient-east-lothian-doon-hill
- https://canmore.org.uk/site/57668/doon-hill