Pneuma

Intro
Pneuma is the second planet orbiting Klaus. It is a large rocky nearly 3 times the size of Kerbin, nearly 4 times its gravity, and more than 27 times its mass. It is a very big, very dense ball of rock and iron.

Topography
Pneuma's topographic features include lakes of dried iron, mountains up to tens of kilometres high, and a huge scar-like mountain ridge stretching nearly half the planet.

Past
Pneuma is most likely a chtonian planet. In the past it formed as a gas giant, then becoming a hot Jupiter, and it stayed like that for a while, until Klaus went supernova which stripped Pneuma of its gas giant atmosphere, thus exposing the core. So really Pneuma is a gas giant core.