World War II 'horror bunker' run by infamous Unit 731 discovered in China

Japanese Unit 731 staff carrying a body from one of the unit's facilities.

Archaeologists in China have uncovered a secret underground bunker used by Japanese scientists to conduct horrific experiments on human subjects during World War II.

The "horror bunker," discovered near the city of Anda in Heilongjiang province, northeast China, was used by the Japanese army's infamous Unit 731 during Japan's occupation of China from 1931 to 1945.