Horizon
Horizon
The Secret Life Of Caves #S40E10
Set against the back drop of awe inspiring geological beauty, a strange scientific adventure sets out to discover how a mineral clad cave network - the height of a 30 storey building and the length of six football fields - came to exist deep below the Guadalupe Mountains in North America. But this journey soon unravels a multitude of inexplicable phenomena and obscure geological formations, leading to the discovery of extreme rock-eating microbes - a testimony from primordial Earth and a glimpse of life elsewhere in the Solar System. Geologists believed that all limestone caves were formed by rain and underground water percolating through cracks in the rocks. Absorbing carbon dioxide from the soil, this water becomes weak carbonic acid, nibbling away at limestone, etching out networks of subterranean caves.
Episode 10 of Season 40 from Horizon — available to stream in HD on any device.
Comments & Discussions
Join the conversation
Sign in to leave a comment
No comments yet
Be the first to share your thoughts!
Recommended
Because you liked Horizon
The Furry Detectives: Unmasking a Monster
The Furry Detectives: Unmasking a Monster
East Harbour Heroes
East Harbour Heroes
Go Gently
Go Gently
Billy Joel: And So It Goes
Billy Joel: And So It Goes
United Gangs of America
United Gangs of America
Dr Ann's Secret Lives
Dr Ann's Secret Lives
Survival Mode
Survival Mode
Critical: Between Life and Death
Critical: Between Life and Death
Beyond Skinwalker Ranch
Beyond Skinwalker Ranch
Abraham Lincoln
Abraham Lincoln
Explore Content
Search for movies, TV shows, collections, manga, or people
Trending Now