Aartalsee, Bischoffen
<a rel="nofollow" class="external text" href="https://web.archive.org/web/20161013152352/http://www.panoramio.com/user/288043?with_photo_id=26120915">Helfmann</a>
CC BY-SA 3.0
<a rel="nofollow" class="external free" href="https://web.archive.org/web/20161013152350/http://www.panoramio.com/photo/26120915">https://web.archive.org/web/20161013152350/http://www.panoramio.com/photo/26120915</a>