Hike around craters and cooling lava at icelands fimmvorouhals volcano in thorsmork valley the exciting day trip includes round trip transport by 4x4 jeep from reykjavik as well as a stop at seljalandsfoss waterfall near eyjafjallajokull glacier after arriving at basar in thorsmork valley set off on a 12 mile 20 km hike taking in spectacular volcanic scenerythe paths are relatively steep and require a good general fitness