Although hidden from human eyes, Cassini can spot these dark features on the surface of Titan thanks to its special near-infrared filters. The features seen here have been dubbed "Fensal" and "Aztlan" by scientist. The dark features are believed to be vast dunes of particles that precipitated out of Titan's atmosphere. For a close-up of this region, see PIA07732. Titan, Saturn's largest moon, is 3200 miles (5150 kilometers) across. This view looks toward the Saturn-facing hemisphere of Titan. North on Titan is up and rotated 32 degrees to the right. The image was taken with the Cassini spacecraft narrow-angle camera on April 13, 2013 using a spectral filter sensitive to wavelengths of near-infrared light centered at 938 nanometers. The view was acquired at a distance of approximately 1.117 million miles (1.797 million kilometers) from Titan and at a Sun-Titan-spacecraft, or phase, angle of 4 degrees. Image scale is 7 miles (11 kilometers) per pixel.

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