Barrack related plaque? [????- ] | Gwulo: Old Hong Kong

Barrack related plaque? [????- ]

Current condition: 

Passing by this plaque in 2014 when the inscriptions on it were still quite legible, however, I didn't have any pictures of the whole plaque, for my attention was only on the training ground behind the fence, not outside of it.

But now it seems that there's a layer of white paint on it in the Google Street Map, does anyone have a recent photo of it? What's the nature of this stone?

San Wai Barrack

Photos that show this place



It looks to record who built a road, but I'm not sure if it's in its original location or not.

This Road Was Constructed
By 1st Battalion 6th Queen
Elizabeth's Own Gurkha Rifles
1st Battalion 7th Duke Of
Edinburgh's Own Gurkha Rifles
69 Gurkha ??????????????
Squadron ???????????????
Lung Yeuk ???????????????