Contemporary records state, “Underground chamber. Wivenhoe Woods, Wivenhoe”.<1> These woods lie to the W of Wivenhoe between the railway and the town. There is nothing to suggest what the “underground chamber” may have been except that the only other entry of this description so far noted in War Time Contraventions 1968, at Beeleigh Mill, Maldon (Essex SMR 20277), the underground chamber was discovered to be a British Resistance hideout. On this limited evidence, together with the fact that most of these hideouts were built in woods, the Wivenhoe Wood structure is provisionally listed here as such a site until such time as further information may become available.

See also <2> & <3>.