...

                                    Left.  Ridge Section 147; Right: Cropped 1200 dpi USGS color chart of same section                                            
Larger expanded version of color chart above
USGS Charts 102030S-240260-260280
Lunascan Quad Composite of Sections 135,136,146,147

Ridge Section 147 wasn't easy to produce due to lack of specific large craters. But the west section of Montes Cordillera made up for this. This feature is a mountain range on the Moon that extends from the Near Side to the Far Side and  forms the outer wall of peaks that surround the Mare Orientale impact basin, the inner ring being formed by the Montes Rook. (Our image at upper left doesn't highlight the mountain range very well, and the "pointer" rests on the western edge only). To appreciate the immensity and importance of this area one must look at the video flyovers linked below or this LRO color graphic. The center of the range is located at selenographic 17.5° S, 81.6° W, and the diameter is 574 km (357 mi). This range of peaks lies across the southwestern limb of the Moon, so that they are observed from the side from Earth. The western extreme is approximately 116° W, on the Far Side of the Moon. The northern part of the range lies just to the south of the lunar equate, while the southern extent reaches about 38° S. The inner face of the range is distinguished by an uneven, ring-shaped plain surrounding the Montes Rook, while the outer extent apparently consists of a wide blanket of ejecta features deposited during the formation of the Mare Orientale. These have formed various ridges and valleys radial to the mare, and have heavily modified nearby pre-existing crater formations. (Credit: Most of the information used in this section feature descriptions was obtained from wikipedia.org. Section 147 and this directory was created by Fran Ridge and Ned Haskin of The Lunascan Project).