Adamantine (Molten Heart)
From Tardis Wiki, the free Doctor Who reference
- You may be looking for the planet from the novel The Fall of Yquatine.
Adamantine was a volcanic planet visited by the Thirteenth Doctor, Yasmin Khan, Graham O'Brien and Ryan Sinclair. Below its surface were many crystalline caves, lava seas and volcanic islands, which were home to a species of living rocks. (PROSE: Molten Heart)
