Damm - but the real street called Damm runs at right-angles at the far end of this passage (see map).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/14583963@N00">David Short</a> from Windsor, UK
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/14583963@N00/9115040412/">Quedlinburg</a>