Eldborg crater is located in West Iceland about 38 km north of the town Borgarnes and about 104 km from Reykjavík. Eldborg means the City of Fire but the crater was most active about 5000-8000 years ago. The crater is 100 meters above sea level and rises about 60 meters above the surrounding lava field. It is the largest crater, located on a short volcanic rift, about 200 meters long and 50 meters deep. Eldborg was preserved back in 1974.
It is possible to hike to the crater from Snorrastaðir farm. The hike back and forth is about 5 km but it is also possible to hike around the crater and up to it. The hike is rather easy but takes you through a lava field so mind your step on the way.
The crater is located about 1 hour and 30 minutes (104 km) drive from Reykjavík. Take Ring Road nr. 1 towards the town Borgarnes and then take road nr. 54. Drive for about 25 minutes and then turn left to Snorrastaðir farm.
Read more about Driving in Iceland.