The Muziris Heritage Project will soon uncover a well-documented but long unseen part of Kerala&rsquos history. More than 2,000 years ago, Muziris, the coastal city of spices celebrated in epic and history, stretched over what is now Ernakulam and Thrissur districts, an area veined with estuaries and rivers. In the 1300s, a natural calamity wiped out the harbour, and the magnificent city vanished.