Tholia

Tholia (also known as Tholis or Tholia Prime) was the homeworld of the Tholians, and the seat of the Tholian Assembly.

The planet suffered from a number of quakes from the volcanic Underrock beneath the world's three principal continents. Tholia possessed three continents. In 2298, the planet was catalogued as a class N planet.

In 2151, Klaang shouted out the planet's name while he was aboard the Enterprise.