The Mackenzie Delta (background) with 2 pingos near the shore of the Arctic Ocean.
Driftwood (white) along the shoreline is found very frequently. The formerly drained lakes can easily be outlined. Photo: Lorenz King, August 8,1987
<a href="//commons.wikimedia.org/wiki/User:Matti%26Keti" title="User:Matti&amp;Keti">Matti&amp;Keti</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>