The Only Good Dalek
Strantana was an ice planet.
During a war between humanity and the Daleks, Earth’s secret Station 7 orbited the planet. It was where Professor Weston’s base was located and where the Abomination was hidden from the Daleks. The Chief Strategist led a Dalek platoon to destroy the Abomination. The Dalek Fleet was destroyed by a volcanic eruption planned by the Eleventh Doctor and the Space Security Service. (The Only Good Dalek)