Mars Anomalies - HiRISE/ Milankovic Crater

Here is an amazing find made by Mars Moon Space of Youtube. He discovered in Milankovic Crater strange structures, some of them looks like high walls and others looks like some sort of platform.

NASA link: http://hirise-pds.lpl.arizona.edu/PDS/EXTRAS/RDR/ESP/ORB_019200_019299/ESP_019220_2345/ESP_019220_2345_RED.NOMAP.browse.jpg