IMG_20210125_GaugeBasinBattery.jpg | Gwulo: Old Hong Kong

IMG_20210125_GaugeBasinBattery.jpg

IMG_20210125_GaugeBasinBattery.jpg
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Been only able to find this, which looks like a tunnel entrance or window ... But haven't ventured inside.

 

Date picture taken (may be approximate): 
Monday, January 25, 2021