Brimham Rocks, North Yorkshire, England. This is not the original Great Cannon, but another rock called Cannon Rock by the National Trust, because its weathering appears to represent cannon ball shot marks.
<a href="//commons.wikimedia.org/wiki/User:Storye_book" title="User:Storye book">Storye book</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>