File:AS08-17-2687 (22304949476).jpg

Apollo 8 Hasselblad image from film magazine 17/C - Lunar Orbit. This photo was used in Figure 2-27 of the Analysis of Apollo 8 Photography and Visual Observations (SP-201), which has the following caption:

Probable volcanic or debris flows (Apollo 8 frame 2687-C).

The text of the Analysis refers to the figure as follows:

A number of flows and flow fronts of probable volcanic origin were detected in the Apollo 8 photographs. At least two examples are pictured in figure 2-27. A crater, which is cut by the upper right edge of the photograph, displays a raised rim and an extremely irregular floor. The floor is strewn with irregular, positive features and a number of small craters. The rim crest of the crater appears to have been the starting point of a number of flows. One flow trends in a southeasterly direction and ends in a pool of dark material. The floor of a large crater southeast of the pool also displays a flow front reminiscent in gross morphology of those on the northeastern floor of the crater Copernicus (which may be debris flows).

Scarps which may be flow fronts of volcanic material or debris are seen in the left portion of figure 2-27. One of these is very sharp and clearly delineates at least one generation of dark mantling material. The scarp cuts across several craters, which suggests, alternatively, that it may be a fault scarp or at any rate tectonically controlled. A crater located near the lower end of the pictured part of the scarp is about 18 km in diameter. This crater displays a subdued rim and a dark apron of mantling material in a subradial texture.