Where is the deepest known underground laboratory?

SNOLAB is located near Sudbury, Ontario, in Canada, inside the Creighton mine. The laboratory sits roughly 2,000 meters underground, where the surrounding rock shields experiments from cosmic radiation. This makes it ideal for extremely sensitive physics experiments, including neutrino and dark matter searches. It succeeded the earlier Sudbury Neutrino Observatory tradition of underground particle research in the region. Deep underground placement is essential because many rare-particle signals would otherwise be drowned out by background radiation.