The brook Alsmicke a few hundred meters up its mouth, located in "Alsmicketal mit Hangwäldern" nature reserve (Germany).
<a href="//commons.wikimedia.org/wiki/User:Thariama" title="User:Thariama">Thariama</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>