There are few things more annoying than losing your keys, but most of the time the mystery ends when we find them in our pocket or underneath a piece of paper on the kitchen table.

But some mysteries aren't so easy to solve, like some mind-blowing secrets locked away in vaults and tombs around the world.

From the cursed grave of a Chinese emperor to a billionaire drug lord's law stash,

let's investigate some strange mysteries hidden away, just waiting to be discovered.

You're listening.

You're listening to be amazed.

In the state of Kerala in southern India, there's a real-life story of treasure, ancient secrets, and dently intrigue.

The temple of Sri Padmanhabab Swami in Trivedrum is the holy shrine to Mahavishnu, the most

powerful Hindu deity.

The entirely gold-plated temple was built in the 16th century and was renovated a few hundred years later by the Kings of Travancore, one of India's wealthiest ancient families.

According to local legends, the kings of Travancore had hidden their vast wealth within the stone walls and vault of the temple.

Then in 2011 the Indian Supreme Court demanded a routine audit of the temple's treasury.

Counting the treasure was harder than it sounds. Local religious leaders warned that opening the vaults would disrespect Mahavishnu,

leading to catastrophic heavenly punishment.

The last time someone tried was in 1931, and legend has it, a sudden plague of cobra sprang from the vault.

But despite protests and death threats from hardline Hindus in 2011, lawyer T.P. Sundurigen got permission to open it up for the first time in

centuries. Not long after T.P. Sundurigen and his team had opened five of the six vaults and were

stunned by what they found. Inside the temple was a breathtaking hoard of crowns, weapons, bags of

diamonds, rubies, gold statues, vessels made of gold,

golden elephants, gold coins, even golden coconuts studded with jewels. In total, the contents of the

treasury were valued at one trillion U.S. dollars. But one door remained locked. The vault named the

Bahra Takan Kalara, A huge serpent figure on the door

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