Trenches [????- ] | Gwulo: Old Hong Kong

Trenches [????- ]

Current condition: 
Ruin

Trenches surrounding the L-shape top of 67m knoll.

A military-like small building and some trenches have been found southwest of this knoll on the southern slope of a long stretch of hill earlier on, thus I wonder if the trenches found this time were part of that construction scheme.

Part of the trenches lies in the forest, its coordinate is: 

22.488268, 114.06693

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