When a drill drills too deep into the earth, something that had been hibernating beneath the earth's crust is woken, and it's hungry for revenge.
Calificación de episodios
Reparto del episodio
43
38
15
1
- Amy Pond
- The Doctor
- Rory
- Madame Vastra
- Nasreen Chaudhry
- Tony Mack
- Ambrose
- Mo
- Elliot
- Silurian
- Silurian Warrior
- Malohkeh