Hverfjall, located in northern Iceland's Mývatn region, is a rare example of a tuff ring volcano. The diameter of its crater spans approx. 1 km. A glimpse of Lake Mývatn can be spotted in the background.
In mid-August 2010 ESO Photo Ambassador Yuri Beletsky snapped this amazing photo at ESO’s Paranal Observatory. A group of astronomers were observing the centre of the Milky Way using the laser guide star facility at Yepun, one of the four Unit Telescopes of the Very Large Telescope (VLT). (POTD)