The origin and purpose of this remarkable feature on Harkerside Moor are unresolved. Here are links to three reports:
Historic England official listing Maiden Castle prehistoric defended settlement and adjacent round barrow, Grinton – 1012609 | Historic England.
SWAAG database Record (2011 and 2016) by Stephen Eastmead, SWAAG Sites Category – scroll to the second entry. For the story of the SWAAG database click here: SWAAG database.
Durham University Archaeological Services supported by SWAAG members – A report of 2011 on Two Geophysics Surveys; the first being Maiden Castle.
