1. Site description from Dyfed Archaeological Trust HER and Defence of Britain project:

Summary :
1940-44, Anti-Invasion, Defence Post/Pillbox, now derelict. Semi-sunken, square, brick lined defence post, entered by a doorway in east wall approached by a flight of concrete steps. Low flat re-inforced concrete roof supported on brick piers at each corner. The roof has a large hole blasted through it by a shaped explosive charge. RJC.Thomas, 04.02.93.

Sources :
Murphy,K & Allen,B , 1997 , Coastal Survey 1996-7 - Strumble Head to Ginst Point ,
Page,N , 2004 , Castlemartin Army Training Estate Condition Survey ,
RAF , 07.07.46. , Sortie No. 106G-UK-1625 ,
Thomas,R , 1993 ,
Thomas,R , 1994 , Survery of 19th and 20th Century Military Buildings of Pembrokeshire ,
Thomas,R , 1994 , Disused Military Buildings Study ,

2. Derelict bunker structures documented during Royal Commission aerial reconnaissance.

T. Driver, RCAHMW, 2017