Thoros-Beta
From Tardis Wiki, the free Doctor Who reference
Thoros-Beta was a rocky planet inhabited by the Mentors and twin planet to Thoros Alpha. The many oceans of Thoros-Beta were pinkish and the sky a greenish blue. There was also a large gas giant within sight of the surface. Most of the settlements were underground and located within caverns.
Seas on Thoros-Beta included the Sea of Turmoil, the Sea of Despair and Longing and the Sea of Sorrows. One of the known islands was called Brak. (TV: Mindwarp)
