15. Crater Lacking Ejecta This crater (26-km diameter) has existed long enough for all traces of its ejecta blanket to be eroded away. Interior features, visible in the previous two slides, are not seen in this crater, possibly due to infilling of the bowl by the material blanketing the surrounding plains. 31.16° N, 86.34° W; Viking Orbiter frame 858A04 Right
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