IMG_20200825_JapaneseTunnel_traitor.jpg | Gwulo: Old Hong Kong

IMG_20200825_JapaneseTunnel_traitor.jpg

IMG_20200825_JapaneseTunnel_traitor.jpg
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Local hikers named it as the Traitor's Cave of which I have no idea why.

Date picture taken (may be approximate): 
Tuesday, August 25, 2020