The distribution of putative periglacial landforms on the martian northern plains

It also appears that although putative periglacial features are often found in crater interiors they are not limited to these environments. Extensive areas of patterned ground were found on the inter-crater plains. Lobate features and sorted stripes were often found on crater walls, which would support the hypothesis that they are analogous to hill-slope features on Earth. Scalloped depressions were most often found in crater interiors, or on crater ejecta, although examples on the inter-crater plains were not uncommon.