A combination of color and high resolution black and white data from NASA's Galileo spacecraft was used to produce this view looking down on the crater with the sun illuminating the scene from the right. The Conamara Chaos region is just below the "X" formed by lineae near the top.
Pwyll's visible dark central region is about 26 kilometers in diameter, with a central peak rising to about 600 meters.
Brilliant rays of debris blasted from the impact site extend outward for hundreds of kilometers. The white debris or ejecta clearly overlays everything else on the surface - indicating that this impact crater is younger than all surrounding features. The bright white color suggests a composition of water ice particles.