Huygens amazed its creators by surviving more than an hour on Titan’s surface. It landed on muddy, surprisingly dark ground, a mix of water ice, sand, and frozen hydrocarbons. To human eyes the scene would look as dim as twilight. Colors here are approximate, based on spectral measurements of the surface. The rounded, fist-size rocks show signs of erosion around their bases. Perhaps methane flows through after flash floods, like water in a desert on Earth.