A British photographer has captured the natural beauty of Iceland's ice caves in a breathtaking new photo series.
Mikael Buck and top local guides Einar Runar Sigurdsson and Helen Maria explored the country's frozen world using Sony's latest digital cameras including the α7R II which features the world first back-illuminated full-frame sensor, bringing together ultra-high resolution and ultra-high sensitivity.
See also: Extremely rare moonbow appears in the sky over Iceland
The amazing images were taken in the caves of Vatnajokull, one of the largest glaciers in Europe, revealing its frozen, icy splendour through astoundingly sharp and detailed photography.
They were shot without the use of any external sources – just the natural light that filters through the ice caves.
See also: This video of Iceland will make you want to go there right now
Bright blue and bubble-like walls resembling an almost underwater scene can be seen in the photo series. Flowing waterfalls, crystal-clear crevasses and icy tunnels were also pictured within the frosty fortress.
Buck's photos display the never-before-seen ice caverns in Vatnajokull, which was made possible through Sony's new sensor technology, allowing incredibly detailed low-light photography.
Each year, the Vatnajokull glacier shifts and changes, revealing complex cave systems that are there for only a matter of weeks before metamorphosing again.
Helen Maria of Local Guide, Iceland's oldest mountain guiding company, said: "I have been exploring these ice caves for years. Being here in them is a truly wonderful opportunity.
"Knowing you're experiencing such a fleeting phenomenon makes it even more special – the opportunity to help capture this nature in all its intricate glory is a truly magical experience.
"This series of photographs has done it justice like never before, and I hope many more people will be spurred on to visit as a result."