An unnamed ice planet on the "ass end of nowhere" is a base of operations for the Cylons during the Cylon War.
Rumors amongst the Colonials indicate that this ice planet houses a superweapon, since it houses an impressive amount of defenses: three Raider wings, ground forces, nuclear weapons (Razor Flashbacks, Episode 1) and at least two basestars (Razor Flashbacks, Episode 3).
The events of Operation Raptor Talon occur in orbit of this planet, as does the destruction of the battlestar Columbia (Razor Flashbacks, Episode 3).
When Adama crash lands on the planet, he discovers a grounded basestar and several warehouses. In one of the buildings he finds a laboratory, where the Cylons experimented on humans they abducted from civilian vessels. Unable to free the survivors, he leaves the building when the basestar takes off (Razor Flashbacks, Episodes 4 through 7).