These images, acquired by Landsat 5 and 8, show the retreat of Helheim Glacier from 1985 to 2017. Helheim Glacier is one of Greenland's largest outlet glaciers and feeds into the waters of Helheim Fjord, a part of the Sermilik system. The glacier is named after the realm of the dead in Norse Mythology.

• Image 1: Product: Geo Tiff format, Satellite/Sensor: Landsat 5 TM, Resolution: 30 metres, Coverage: 180 x 180 km, Acquisition Date: 06 July 1985, Band Combination used to create this image: 3, 2, 1 (RGB) Visible colour layers
• Image 2: Product: Geo Tiff format, Satellite/Sensor: Landsat 8 OLI, Resolution: 30 metres, Coverage: 180 x 180 km, Acquisition Date: 20 February 2017, Band Combination used to create this image: 4, 3, 2 (RGB) Visible colour layers