Mapping of Venus
Regional plains (rp)

The regional plains unit (rp) is the most widespread unit on the Venusian surface of about 182.8 million km 2. It is defined as smooth and homogeneous plains, which are deformed into networks of linear subparallel or intersecting ridges. This unit is interpreted as having volcanic origin with deformation of wrinkle ridges superimposed. However, the source of volcanism is not obvious in the Magellan data.
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