China opens the world's deepest and largest underground laboratory 7,800 feet below a mountain to hunt for dark matter

• China has just opened the deepest and largest underground laboratory in the world.
• The China Jinping Underground Laboratory-II will seek to uncover the secrets of dark matter. 
• At about 7,800 feet underground, it should be shielded from cosmic radiation. 

China has opened the biggest and deepest underground laboratory in the world in a bid to uncover the secrets of dark matter.

The China Jinping Underground Laboratory-II (CJPL-II) laboratory in southwest China's Sichuan Province opened in December 2023, an expansion of the original CJPL facility, which was first launched in 2010.