It's about 10 kilometers in diameter, it's inclination is 4 - 5? in the lower slopes, but 6 - 8? higher up. It's oblong crater is about 1,200 - 1,500 meters in length, 500 meters broad, and about 100 meters deep.
Most of its lava-fields have flowed in a northerly direction, with one branch of it reaching the valley of B??rdalur, a distance of roughly 100 kms.