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� _ J <br />Exhibit C: This exhibit is from a 1975 photograph. The light areas in <br />the photograph seem to indicate areas where the surface has <br />changed. The faint pattern is similar to the irregular shape of the hole <br />from 1963 and the sketch silhouette from Raab's 1966 contour map. It <br />seems to confirm the configuration of the irregular-shaped hole, but <br />doesn't tell us anything about the size of the irregular-shaped hole. <br />12 <br />