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China Operationalizes World’s Deepest Physics Laboratory "CJPL-II".

Science & Technology | Dated: 18 Dec 2025

China has commenced operations at the "China Jinping Underground Laboratory-II" (CJPL-II), located 2,400 meters below the surface in Sichuan province. It is now the world's deepest and largest underground laboratory, surpassing Italy's Gran Sasso National Laboratory. The facility aims to study dark matter and neutrino physics.

🎯 Key Highlights:

  • The laboratory is shielded from cosmic rays by the thick rock cover of the Jinping Mountain.
  • It hosts the Particle and Astrophysical Xenon (PandaX) experiment designed to detect dark matter.
  • The facility provides an ultra-low radiation background essential for precision physics experiments.

💡 Other Important Facts:

  • Lab: China Jinping Underground Laboratory-II.
  • Depth: 2,400 meters.
  • Purpose: Dark Matter Research.

📚 Test Your Knowledge:

Which country recently operationalized the world's deepest underground physics laboratory, CJPL-II?

Correct Answer: China

🚀 Quick Recap:

About China

  • Capital – Beijing
  • President – Xi Jinping