Longnight

Due to the extreme and elliptical orbit of the Planet Nilfeheim, Seasons last for many years. Only two Seasons are known on Nilfeheim : Shortsummer and LONGNIGHT.

Longnight lasts 7 standard Terran Years. During Longnight the Oceans of Nilfeheim freeze over and temperatures drop to minus 90 degrees on the Celcius Scale.

Almost all native Life migrates to an area on Nilfeheim where underwater volcanoes, black smokers and thermal vents keep the water temperatures much warmer than elsewhere. The Tyranno Fins take a seven year long hibernation sleep.