10 Hidden Underground Tunnels in India 

DELHI LEGISLATIVE ASSEMBLY The secret tunnel highlights the history of the British era. The place reflects the iconic history and pays tribute to the freedom fighters of India.

NATIONAL LIBRARY OF KOLKATA This is the 250-year-old, National Library of Kolkata. The British had built this tunnel as an escape route.

TALATAL GHAR, ASSAM Talatal Ghar holds prominence in the subject of secrets of Indian history. This army base was built in the 18th century with two underground tunnels.

CHARMINAR, HYDERABAD There have been several theories that possibly claim presence of various tunnels between the famous Charminar to the Golconda Fort.

GENERAL POST OFFICE, MUMBAI An old tunnel was discovered in the garden of the General Post Office building.

AMRITSAR Some underground tunnels have been more than 400 years old. The book, Tawarikh Lahore-Amritsar, mentions about the presence of more than two dozen tunnels in the city.

AMBER PALACE, JAIPUR Amber palace in Jaipur remarks history and reflects the historic significance with an open air tunnel.

SRI PADMANABHASWAMY TEMPLE, KERALA This temple has six hidden vaults. One of the secrets of Indian history was the discovery of gold worth 22 billion dollars

ST GEORGES HOSPITAL, MUMBAI At St. Georges Hospital, the staff discovered a 1.5 km long underground tunnel.