Fimmvörðuháls, the Five Cairn Ridge, is one of the most popular hiking trails in Iceland. Although quite challenging, and even dangerous, many Icelanders and visitors walk this 22 km and 1000 meter high track every summer. Obviously, it has something to offer. It is a spectacular hike with stunning views and many natural wonders: waterfalls, craters, canyons, glaciers and breathtaking landscape. In 2010, a small eruption started on the track almost by the most challenging part of the track, Heljarkambur or Crest of Hell.
Most of the hikers walk from the well-known waterfall Skógarfoss to Þórsmörk. At the peak, the track is on the east side of Eyjafjallajokull and west side of Mýrdalsjökull. Both glaciers house powerful volcanos that can erupt with short notice. Even the most notorious volcano in Iceland's history as well as geological history, Katla in Mýrdalsjökull, has been due for a long time.
In 1970, a group of eleven hikers started the trail in good weather determined to walk to Þórsmörk. There was nothing exceptionally unusual about the weather or the condition. On the top near Heljarkambur, a severe weather hit the mountain and three of the hikers became exhausted and died within hours. The rest of the group made it to Básar in Þórsmörk with enormous hardship and difficulties. The story is a constant reminder of the unpredictable weather that two glaciers can produce. It is also a reminder of the necessity to prepare to hike over Fimmvörðuháls thoroughly and take all the percussion possible.
The track is only accessible from late May until September and is only for highly trained and experienced hikers at any other time of the year.