The plains appear to be basaltic. Large belts of compressional ridges transect the lowlands. Beta Regio is an example of a Upland. Uplands are centers of intense volcanism. Ishtar Terra is the largest.
Radar imaging reveals a number of interesting features seen only on Venus.
Coronae consist of concentric ridges. The image of Onatah and Bahet coronae is from JPL, and is accompanied by this linked caption . Impact craters are rare, but they are found. Dickinson crater is an example. On the other hand the density and pressure are much higher than that of Earth's atmosphere, by a factor of about 90.