No main cast listed for this episode.
NOVA — S21E19
Episode: Journey to the Sacred Sea
Air Date: 1994-12-20
Runtime: 55 min
Overview
NOVA travels to Lake Baikal, the world's oldest and deepest lake, containing one-fifth of all the fresh water on Earth. Investigating Baikal from above, below and all around, NOVA charts its dramatically changing environment over the course of four seasons.