The China Jinping Underground Laboratory () is a deep underground laboratory in the Jinping Mountains of Sichuan, China. The cosmic ray rate in the laboratory is under 0.2 muons/m²/day, placing the lab at a depth of 6720 m.w.e.: and making it the best-shielded underground laboratory in the world.: The actual depth of the laboratory is , yet there is horizontal access so equipment may be brought in by truck.