The glacier Nigardsbreen and the lake Nigardsbrevatnet in Luster municipality in <a href="//commons.wikimedia.org/wiki/Sogn_og_Fjordane" title="Sogn og Fjordane">Sogn og Fjordane</a> county in Norway. Compare this photo with <a href="//commons.wikimedia.org/wiki/File:Nigardsbreen-Norway-close-up.jpg" title="File:Nigardsbreen-Norway-close-up.jpg">Image:Nigardsbreen-Norway-close-up.jpg</a> to get an idea about the size. The black hole in the ice can be seen in both photos.
<a href="//commons.wikimedia.org/wiki/User:Pjacklam" title="User:Pjacklam">Pjacklam</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>