One of two <a href="https://en.wikipedia.org/wiki/BL_6_inch_gun_Mk_III_IV_VI" class="extiw" title="en:BL 6 inch gun Mk III IV VI">6 inch BL (breech loading) disappearing guns</a> emplaced at Lei Yue Mun Fort.  The fort now forms a large part of the Hong Kong Museum of Coastal Defence.
<a href="//commons.wikimedia.org/wiki/User:BrokenSphere" title="User:BrokenSphere">BrokenSphere</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>