The highland reserve received its protected status in 1979. The aim of the protection is to preserve unique areas so that future generations have the opportunity to enjoy them in the same way as we do. The nature reserve is 446 square kilometers in size and is all within an area over 500 m above sea level. The area is mountainous and shaped by volcanic activity and geothermal heat. The color palette is broad, mostly due to rhyolite and obsidian in the mountains. Lava fields, rivers and lakes are also prominent in the landscape.
For more information, please see Fjallabak Nature Reserve (ust.is).