The Fjallabak nature reserve is the area where the popular Laugavegur is situated. It is an area of active volcanism, hot springs (Landmannalaugar), high mountains and deep valleys, covered by lavas, ice, snow, sands, rivers and lakes. This is the most popular hiking area in Iceland, also known by the names Landmannalaugar and Þórsmörk, with many trails and huts.
Dominating the park is the Torfajökull Volcano, 1190 meter. In the vicinity are the glaciers of Mýrdalsjökull, Vatnajökull and the infamous Eyjafjallajökull.