Scientists and film makers take us to the bottom of the Great Lakes and show us what the bottoms are like and go back in history when they formed.
Movie Genre:
Documentary
Runtime:
47 min.
Parental Rating:
[ALL]TV-G - General Audiende
Most parents would find this program appropriate for all ages. Although this rating does not signify a program designed specifically for children, most parents may let younger children watch this program unattended.