Ice Lake on Mars

DecoDragon writes "The ESA's Mars Express discovered an ice lake on Mars. The ESA has a number of images and an explanation of what was found. The lake was found in an unnamed crater. The report says it can't be carbon dioxide, because carbon dioxide ice had already disappeared from the northern polar cap at the time the image was taken." Coverage from the BBC also available. From the article: "The team has also been able to detect faint traces of water ice along the rim of the crater and on the crater walls. Mars is covered with deep gorges, apparently carved out by rivers and glaciers, although most of the water vanished millions of years ago. "