Karkinos F

Karkinos F is the second venusian world in the Karkinos system and is the sixth world from the star. Its surface is a hellish wasteland, scarred with the craters of massive volcanic eruptions.

Karkinos F's crust is made mostly of granite and other hard rocks, and is thus too tough for plate tectonics to function, and the planet will build up pressure until a massive super volcanic eruption takes place. These spew ejects over thousands of kilometers, leave caldera a hundred kilometers across. These craters only last a few million years however, due to the abrasiveness of Karkinos F's harsh atmosphere, with wind speeds of up to 320 km per hour. The last massive eruption was around 60,000 years ago, and estimates suggest another is due.