▁lower ▁lat itudes ▁as ▁depos its ▁of ▁fro st ▁or ▁snow ▁mixed ▁gener ously ▁with ▁dust . ▁The ▁atmosphere ▁of ▁Mars ▁contains ▁a ▁great ▁deal ▁of ▁fine ▁dust ▁particles . ▁Water ▁v apor ▁will ▁con den se ▁on ▁the ▁particles , ▁then ▁fall ▁down ▁to ▁the ▁ground ▁due ▁to ▁the ▁additional ▁weight ▁of ▁the ▁water ▁co ating . ▁When ▁ice ▁at ▁the ▁top ▁of ▁the ▁mant ling ▁layer ▁goes ▁back ▁into ▁the ▁atmosphere , ▁it ▁leaves ▁behind ▁dust , ▁which ▁ins ulating ▁the ▁remaining ▁ice . ▁ ▁See ▁also ▁▁ ▁Cha os ▁terrain ▁ ▁Elect ris ▁depos its ▁ ▁F ossa ▁( ge ology ) ▁ ▁Hi RI SE ▁ ▁L akes ▁on ▁Mars ▁ ▁List ▁of ▁areas ▁of ▁cha os ▁terrain ▁on ▁Mars ▁ ▁Mart ian ▁cha os ▁terrain ▁ ▁Mart ian ▁Gul lies ▁ ▁Out flow ▁channels ▁ ▁Ph a eth ont is ▁quad rangle ▁ ▁References ▁ ▁External ▁links ▁ ▁High ▁resolution ▁videos ▁by ▁Se án ▁Dor an ▁of ▁over fl ights ▁of ▁G org on um ▁Cha os , ▁based ▁on ▁a ▁NASA ▁digital ▁terrain ▁model : ▁# 1 ▁( high er ▁alt itude ); ▁# 2 ▁( lower ▁alt itude ); ▁see ▁album ▁for ▁more ▁ ▁Category : P ha eth ont is ▁quad rangle ▁Category : Ch a otic ▁terra ins ▁on ▁Mars <0x0A> </s> ▁S ara ▁Ferr ara ▁( born ▁ 2 4 ▁July ▁ 1 9 9 5 ) ▁is ▁a ▁track ▁cycl ist ▁from ▁ ▁Finland . ▁She ▁represented ▁her ▁nation ▁at ▁the ▁