Öræfajökull, a great glacier–covered mountain range connected to the Vatnajökull massif. Its highest point, Hvanna­dals­hnúkur (2,110 m), is also the highest point in Iceland. It is a volcano which has erupted twice in historical times, 1362 and 1727. Many farms were destroyed in these eruptions, the earlier one being more destructive. Older names were Hnappa­fell mountain and Hnappa­fells­jökull glacier. Glacier Guides at Skaftafell offer guided trips to Hvannadalshnjúkur peak with all technical equipment that is needed (crampons, harness, ice axe and ropes). The trip takes 10–15 hours going over challenging terrain.