Gun Emplacement - The Battery Tynemouth. This is a <a href="https://en.wikipedia.org/wiki/BL_6-inch_Mk_XXIII_naval_gun" class="extiw" title="en:BL 6-inch Mk XXIII naval gun">BL 6-inch Mk XXIII naval gun</a>, being used to represent an earlier <a href="https://en.wikipedia.org/wiki/BL_6-inch_Mk_VII_naval_gun" class="extiw" title="en:BL 6-inch Mk VII naval gun">6-inch Mk VII gun</a>, two of which had served as coastal artillery until around 1956.
<a rel="nofollow" class="external text" href="https://www.geograph.org.uk/profile/16147">R J McNaughton</a>
From <a rel="nofollow" class="external text" href="https://www.geograph.org.uk/photo/503779">geograph.org.uk</a>