Seems they have dug a large hole on top of the hill, &amp; levelled out two areas near the bottom
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/25055169@N02">djim</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/25055169@N02/50792883486/">North Portal - New works</a>