Deep beneath the Padmanabhaswamy Temple in Thiruvananthapuram lies Vault B, one of India’s most famous mysteries. After immense treasures were discovered in several temple chambers, Vault B remained unopened during the court-authorised inspection in 2011. Legend says its entrance is protected by Naga Bandham, a powerful tantric ritual associated with serpent guardians, and warns of disastrous consequences if the chamber is opened improperly. But separating legend from fact is important: there is no verified public inventory of what lies inside Vault B, and its contents remain unknown. Watch the video to know the whole story.