The west side of Chryse Planitia has been extensively sculpted by flow from Maja Vallis, which is situated just to the left of this mosaic. Flow diverged across the gently sloping plain of Chryse Planitia to form the sculpted features seen in this mosaic. Ridges, similar to those on the lunar maria, appear to have partly dammed or diverted flow to form a variety of scour patterns. Flow was from the left and apparently ponded west of the mare ridge. It then cut gaps as it flowed over the low points in the ridge.
Similar relations occur in the channeled scablands of Washington state.
After crossing the ridge, the flow cut grooves in the Chryse Planitia floor as it flowed around Dromore, an old impact crater. This channel has few tributaries, a flat floor, and cuspate walls, and resembles lunar sinuous rilles that are believed to be formed by lava flow. The morphology suggests formation by ground water sapping rather than by surface run-off. Ground ice is a possible source for the water. This valley is several kilometers and is cut into layered deposits that are clearly exposed in the valley walls.