After installation of a radar reflector a scientist starts to acquire a transect across the ice sheet of west Greenland using a ground penetrating radar device.
<a href="//commons.wikimedia.org/w/index.php?title=User:Silvanleinss&amp;action=edit&amp;redlink=1" class="new" title="User:Silvanleinss (page does not exist)">Silvan Leinss</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>