New images and news: Outcrops in Yellowknife Bay are being exposed by wind driven erosion. These rocks record superimposed ancient lake and stream deposits that offered past environmental conditions favorable for microbial life. The ancient fresh water lake at the Yellowknife Bay existed for periods spanning perhaps millions to tens of millions of years in length – before eventually evaporating completely after Mars lost its thick atmosphere. This lake was likely ~30 miles long and 3 miles wide. Curiosity revealed the presence of clay minerals. These clay minerals form in neutral pH water that is ‘drinkable” and conducive to the formation of life.