A side of the emplacement for 6 inch BL (breech loading) disappearing gun no. 2 at Lei Yue Mun Fort.  The fort now forms a large part of the Hong Kong Museum of Coastal Defence.  See <a href="//commons.wikimedia.org/wiki/File:6_inch_BL_Mk_IV_disappearing_gun_no._2_emplacement_1_HKMCD.JPG" title="File:6 inch BL Mk IV disappearing gun no. 2 emplacement 1 HKMCD.JPG">Image:6 inch BL Mk IV disappearing gun no. 2 emplacement 1 HKMCD.JPG</a>.
<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>