North is to the top, and the sun is illuminating the terrain from the right. Note that one ridge has been sheared by a right-lateral fault. This high resolution image of the icy plains on Europa shows multiple sets of cross-cutting ridges. Many of these ridges are cut by younger fractures. Faults and ridges give planetary geologists clues to the stresses within the crust at the time of formation.
Ridges typically form as a result of compression.
In contrast, fractures form as a result of tensional stresses that crack the brittle crust. These features indicate that the surface of Europa has experienced repeated episodes of tension and compression throughout its history. North is toward the top of the image, with the sun illuminating the surface from the right. Lower resolution pictures of Pwyll Crater taken earlier in the mission show that material ejected by the impact can be traced for hundreds of miles across the icy surface of Europa. Images of the crater taken from different angles on the different orbits have been combined to generate a model of the topography of Pwyll and its surroundings.