The mother of all magma chambers is no doubt Þríhnjúkagígur.
One of the largest of its kind in the world. Situated in the nationally protected ´Blue mountains´ mountain range, Þríhnjúkagígur was first explored in 1974.
Since then, despite the short distance from Reykjavik, only a handful of people have had the fortune of experiencing this this magnificent 4000 year old geological phenomenon first hand.
Þríhnjúkagígur is a massive vertical lava tube at the bottom of which lies a volcanic vault that could house a respectable roman cathedral. The distance from top to bottom is roughly the height of the Great Pyramid of Giza!
From the opening there is a sheer drop down a narrow conduit that gradually opens up to a gigantic cone-shaped dome the base of which is the size of a football field!
Descending into this spent magma chamber of a dormant volcano is truly an unforgettable experience. Not only is it the world´s only magma chamber that is safely accessible, but its natural beauty is staggering.
The inside of the volcano consists of a mosaic of lava formations displaying an other-worldly symphony of colours that only Mother nature could compose.
Seeing is believing!