Frostisen or Ruostajiekŋa is a glacier in Narvik Municipality in Nordland county, Norway. It is one of the larger plateau glaciers in Norway. Frostisen covers an area of about 25 square kilometres, and its elevation ranges from 840 to 1,710 metres above sea level. The glacier lies near the Skjomen fjord, a branch of the Ofotfjorden, just southwest of the tow…Frostisen or Ruostajiekŋa is a glacier in Narvik Municipality in Nordland county, Norway. It is one of the larger plateau glaciers in Norway. Frostisen covers an area of about 25 square kilometres, and its elevation ranges from 840 to 1,710 metres above sea level. The glacier lies near the Skjomen fjord, a branch of the Ofotfjorden, just southwest of the town of Narvik. The village of Elvegård lies about 6 kilometres east of the glacier. The lakes Geitvatnet, Isvatnet, Kjelvatnet, Nordre Bukkevatnet and Søre Bukkevatnet lie southwest of the glacier.