Kavur

Kavur is a planet in the Random Ninsanity universe. It is the first planet in its solar system, skirting at the far edge of the habitable zone. Only the poles of the planet are habitable by humans; the equatorial regions of the planet are scorched by the sun's heat during the day and freeze exposed to the void of space at night. Kavur's rotation occurs very slowly, one Kavur day is several months long. Instead, the season tilt of the planet occurs incredibly rapidly; summer solstice and winter solstice are about one week apart. Thus, the rapid change of seasons gives the poles a day/night type effect.

The poles themselves are home to distinct civilizations that developed independently of each other. Because of the difficulty of radio communication due to interference from the sun, both civilizations were fairly advanced when they discovered each other. A train system of sorts was soon built, subterranean at times, encased in a glass tube at other, connecting the two poles.