Large dusty black plastic pipes at Valbodalen marina in <a href="https://en.wikipedia.org/wiki/Lysekil" class="extiw" title="en:Lysekil">Lysekil</a>, Sweden. The pipes are about 25-30 cm in diameter and made from hard plastic. The long pipe is working like a sort of camera obscura showing a distorted reflection of the view in the inside of the pipe. This effect only came in view in the photo, at the scene the view was that of a small red cottage beside a yellow cliff, a bit of lawn and the sea.
<a href="//commons.wikimedia.org/wiki/User:W.carter" title="User:W.carter">W.carter</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>