'Hourglass' shaped craters filled with traces of glacier
Date: 17 March 2005
Satellite: Mars Express
Depicts: Glacier-filled crater
Copyright: ESA/DLR/FU Berlin, CC BY-SA IGO 3.0
This unusual structure with traces of a glacier is located in Promethei Terra at the eastern rim of the Hellas Basin, at about latitude 38° South and longitude 104° East.
A so-called block glacier, flowed from a flank of the massif, past mountains several thousand metres high, into a bowl-shaped impact crater, nine kilometres wide, which has been filled nearly to the rim (right). The block glacier then flowed into a 17 kilometre wide crater (left), 500 metres below, taking advantage of downward slope.
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 IGO License. 
Last Update: 1 September 2019
