A distant view of the problem, the concrete protection wall is breaking up in pieces as more and more of it gets undermined.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/16633132@N04">Ronnie Robertson</a>
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/16633132@N04/12174698924/">Runway 27 IMG_5178</a>