The Tithe Award map is marked Castell at this spot, RCAHMW fieldwork in 1948 describes the site as comprising a semi-circular rampart with no structural remains. RCAHMW Investigator, W.E. Griffiths suggests the site is unlikely to be ancient and believes that the mound may be the remains of quarrying or may possibly be connected with the construction of the adjacent railway tunnel.
Source: NMR site files
SLE 2007