Silurian capital city
From Tardis Wiki, the free Doctor Who reference
The capital city of the Silurians was home to the Parliament of the Silurians. The ceilings of the buildings were built high in order to accommodate dinosaurs. It was located in Motuo, China.
According to the Seventh Doctor, to was known to some as Shambhala, to the Nazis as New Schwabia, and to Edgar Rice Burroughs as Pellucidar. (AUDIO: The Silurian Candidate)