East Brigade HQ | Gwulo: Old Hong Kong

East Brigade HQ

Does anybody know how to get to the underground East Brigade HQ in Tai Tam?
Forum: 

Point 63a of Maltby's report places it at Tai Tam Gap (alternate spellings: Ty Tam, Tytam), but I'm not sure of closer directions than that:

(a) At 1900 hours 18th December three armoured cars of the HKVDC were sent to Tytam Gap to be a mobile reserve in the hands of the Commander East Infantry Brigade at his HQ there, and two other cars remained in hand at Leighton Hill close to i Middlesex HQ.

MrB