Schroter's Valley 2
This is a detailed photo showing part of Schroter's Valley (see last
image). It clearly shows a complex, highly contorted rille inside the
Valley. Like many rivers on the Earth, this rille has many tight loops
along its course. These loops are meanders, and they suggest a long-lived
flow on a fairly flat surface. They also require active erosion of the
valley floor. This channel may have partially melted its way into older
lava flows. (Part of Apollo 15 image P-341.