It sometimes seems as if our planet has no secrets left - but deep beneath the great Antarctic ice sheet scientists have made an astonishing discovery. They've found one of the largest lakes in the world. It's very existence defies belief. Scientists are desperate to get into the lake because its extreme environment may be home to unique flora and fauna, never seen before, and NASA are excited by what it could teach us about extraterrestrial life. But 4 kilometers of ice stand between the lake and the surface, and breaking this seal without contaminating the most pristine body of water on the planet is possibly one of the greatest challenges science faces in the 21st century.

Episode Viewers and Ratings

Season 36 Episode 16 of Horizon resulted in a 0.00 rating in the 18-49 demographic.

Horizon Season 36 Episodes...

• s36e01 - Season 36, Episode 01
• s36e02 - Season 36, Episode 02
• s36e03 - Season 36, Episode 03
• s36e04 - Breath of Life
• s36e05 - The Lost City of Nasca
• s36e06 - The Diamond Makers
• s36e07 - Supervolcanoes
• s36e08 - Miracle in Orbit
• s36e09 - Complete Obsession
• s36e11 - Is GM Safe?
• s36e12 - Planet Hunters Part I
• s36e13 - Planet Hunters
• s36e14 - Moon Children
• s36e15 - Conjoined Twins
• s36e16 - The Lost World of Lake Vostok
• s36e17 - Vanished: The Plane That Disappeared
• s36e18 - Secret Treasures of Zeugma
• s36e19 - The Valley of Life or Death
• s36e20 - Extreme Dinosaurs
• s36e21 - Supermassive Black Holes
• s36e22 - Boy Who Was Turned Into a Girl

Horizon Show Summary

Horizon is BBC Two's flagship 50-minute science documentary series.

Recognised as the world leader in its field, it regularly wins a sweep of international science, medical and environmental film accolades, and has recently won the Royal Television Society Award and the Prix Italia.

In 2002, the British Academy of Film & Television Arts presented Horizon with the BAFTA Television Award for Best Factual Series or Strand.

In 2003 it won the prestigious Images et Science award for best medical documentary and the Carl von Linne Award at the Living Europe film festival in Sweden. That year, a Horizon co-production with WGBH Boston won the Emmy for best documentary.

In September 2014 it celebrated its 50th anniversary and it continues to enjoy outstanding critical acclaim.