From Landmannalaugar (63°59’23.5″N 19°03’30.0″W) to Þórsmörk (63°40’53.0″N 19°30’35.9″W). The Laugavegur Trail is one of the most famous hikes in Iceland. During this hike, you can experience the highlands of Iceland and enjoy a diverse landscape of glaciers, hot springs, lava fields, and multi-colored mountains.
The so-called Fjallabak Nature Reserve (64°00’08.9″N 19°07’40.4″W) was shaped by the glacier-topped volcano, Torfajökull, with many volcanic eruptions, and a high-amount of geothermal activity, which is still active today. In Iceland, this area is the largest rhyolite area and after Grímsvötn the second largest active geothermal area. The bedrock is approximately 8-10 million years old and the central volcano has erupted several times over the last 10,000 years. The last eruption occurred around 1480 CE, which formed most of the sites seen in Landmannalaugar today (lavafields of Laugahraun, Námshraun, Norðurnámshraun, and the crater lake, Ljótipollur).
Most mountains in Landmannalaugar are build-up of rhyolite, e.g., Brennisteinsalda “Sulfur Wave” (63°58′51″N 19°08′45″W) or Bláhnúkur “Blue Peak” (63°58’37.9″N 19°04’07.0″W). Laugahraun is most impressive lava field which was created together with the next-by fields of Hrafntinnuhraun and Namshraun between 872 and 1480 CE.