AS17-2291(M)

Figure 126

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Here is another area in southern Mare Imbrium that shows a profusion of bright rays and chains of secondary craters from Copernicus, which is located about 380 km southeast of the center of the picture. The large crater near the left (west) side is Euler. (See Figures  64 and   137,  138 and139.) Here lighting conditions are ideal for showing how the material ejected from Copernicus secondaries is splashed downrange (away from Copernicus) to form the herringbone ridges and the bright patches or streaks. Individual craters and their associated ridges sometimes combine to form a pattern that resembles the imprint of a bird's foot. The area within the small rectangle is shown in much more detail in figure 127.-H.M.