If you are a keen nature photographer, there are few countries which can offer as much variety as Iceland.
Photographer Sigurður Stefnisson has his pick of natural phenomena to choose from, in the land of fire and ice where volcanoes and the Northern Lights are almost a daily part of life.
The opportunities have allowed the award-winning photographer to capture thousands of captivating images, one of which was voted one of National Geographic's 100 best nature photographs.
Some of his favourite photographs include this one below, capturing an awe-inspiring eruption on the Eyjafjallajokull glacier in Iceland in 2010 - the eruption which caused travel chaos for airline passengers across Europe in 2010.
Lightning's in the ash plume in the volcanic eruption in Eyjafjallajokull glacier in Iceland: This image, taken on 17 April 2010 at 22:37 local time, is the eruption which caused all the problems for the airlines in Europe
Now where did we leave the car? Spectators on 4x4 jeeps look at lava falls from a small lava fountain that began before the ash eruption. There is a canyon in front of the jeeps
Driftwood lies on a black volcanic sand beach
Northern Lights over a volcanic eruption in Mount Hekla in 1991, with the trail of a plane also visible - this image was voted one of the 100 Best Images by National Geographic
This was taken on May 22, 2011 during the Grimsvotn eruption: Sigurður said 'while we were driving from the volcano the ash caught up with us and for a short time we got the most magnificent light - it was quite dark yet at the same time daylight was shining from under the ash cloud'
Sigurður shot this photo in a Ice cave in Vatnajokull glacier in February. Usually Ice caves are quite dark but sometimes the roof of the cave is thin enough for light to escape through