This is a map of Venus.
Click on image for full size
NASA
An Overview of the History of Venus
The terrestrial planets formed by accretion of rocky material and volatiles out of the primitive solar nebula. As they finished forming, about 4 Billion Years ago, the surface continued to be bombarded by the remanent of planetary material available nearby. This period is called the Period of Late, Heavy Bombardment. During this time, there may have been abundant water on the surface of Venus. From the Period of Late, Heavy Bombardment forward, this is probably what happened to Venus:
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