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Limits RegistryThe China Jinping Underground Laboratory (CJPL), beneath Jinping Mountain in Sichuan, sits under roughly 2,400 meters of rock — the deepest operating underground physics laboratory in the world, giving it the lowest cosmic-ray muon background of any such facility and making it a leading site for dark-matter direct-detection experiments like PandaX.
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The China Jinping Underground Laboratory (CJPL), beneath Jinping Mountain in Sichuan, sits under roughly 2,400 meters of rock — the deepest operating underground physics laboratory in the world, giving it the lowest cosmic-ray muon background of any such facility and making it a leading site for dark-matter direct-detection experiments like PandaX.
The greatest vertical rock overburden depth of any operating underground laboratory dedicated to physics research (dark matter, neutrino, and rare-decay searches).
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Limits Registry. LR-DEEPEST-UNDERGROUND-PHYSICS-LAB. Deepest underground physics laboratory. 2026.