R. M. Batson E.A. Cernan V. L. Freeman M. H. Hait H. E. Holt K. A. Howard E.D. Jackson K.B. Larson V. S. Reed J. J. Rennilson H.H. Schmitt D. H. Scott R. L. Sutton D. Stuart-Alexander G.A. Swann N.J. Trask G. E. Ulrich H. G. Wilshire E.W. Wolfe W.R. Muehlberger 1973 The Apollo 17 lunar module (LM) landed on the flat floor of a deep valley that embays the mountainous highlands at the eastern rim of the Serenitatis basin. Serenitatis, the site of a pronounced mascon, is one of the major multi-ringed basins on the near side of the Moon. The Taurus-Littrow valley, which is radial to the Serenitatis basis, is interpreted as a deep graben formed by structural adjustment of lunar crustal material to the Serenitatis impact. application/pdf en National Aeronautics and Space Administration Preliminary geologic investigation of the Apollo 17 landing site chapter