Kamioka Liquid Scintillator Antineutrino Detector

The Kamioka Liquid Scintillator Antineutrino Detector (KamLAND) is an electron antineutrino detector at the Kamioka Observatory, an underground neutrino detection facility in Hida, Gifu, Japan. The device is situated in a drift mine shaft in the old KamiokaNDE cavity in the Japanese Alps.

Source: Wikipedia — Kamioka Liquid Scintillator Antineutrino Detector (CC BY-SA 4.0)