Just 20km southeast of Húsafell, but not readily accessible on foot due to its isolated location on the western edges of the Interior, lies Iceland’s second-largest ice cap, Langjökull (Long Glacier). Covering 950 square kilometres, Langjökull resembles a narrow protruding finger wedged between the Hallmundarhraun lavafield and the Kjölur Interior route – you’ll pass its foothills on both the Kjölur Interior route and when tackling the Kaldidalur route.