Sol 3820, October 22, 2014. Dust in the air turns sunlight hazy over Endeavour Crater. This afternoon view (3:30 p.m. local time) looks northeast, down Wdowiak Ridge. The crater’s far rim, 22 kilometers away, is difficult to distinguish from the crater floor and the sky.
Based on daily Sun images, the atmosphere’s tau, or opacity, has climbed steadily over the past several sols.