Eldborg is a perfectly symmetrical oblong crater about 200 metres long. This was the source of the surrounding lava fields some 5,000 to 8,000 years ago,
It is easiest to approach Eldborg from Snorrastadir farm on its southern side, walking on a marked hiking path 2,5 km through the shrub-covered lava field. It is possible to walk all the way around the crater as well as to the top of the crater. The walk can be done relatively easily within an hour or so.
It is a magnificent site, not just for those interested in the geography or volcanologists. It definitely makes for a great photograph.