Gusev Crater

Frae Wikipedia, the free beuk o knawledge

Gusev Crater is a 90 mile braid delf in the grund that wis belike furmed three tae fower billion years sin whan an shot starn (Asteriod) crashed juist sooth o Maurs’ equator. Thare's a lade seestem that tuims intil it, whilk belike cairried brew watter, or watter an frost, intil the crater.