National Getaways for the Weary Trauma Surgeon; Part 6: Chal Nakhjir, a Living 7-Million-Year-Old Cave!

Chal Nakhjir (Nakhcheer) is a rare geological phenomenon located on the side of the road connecting Delijan to Naragh in Markazi Province, Iran. This amazing cave was discovered in 1989, and it was registered as a national monument in 2001. The cave was opened to the public in March 2010 (1)