The Telescope at the Bottom of the World’s Deepest Lake

Lake Baikal's neutrino telescope hunts ghost particles from a kilometer under Siberian ice. The film explores the world's deepest lake — 1,642 meters deep, holding one-fifth of Earth's fresh water — and why its meter-thick winter ice, not just its clarity, made the $34 million Baikal-GVD possible. It traces the detector from NT200 to 0.7 cubic kilometers, how Cherenkov light tracks neutrinos through the planet, and its race with IceCube and KM3NeT to find their sources.