Sri Lanka lies 10 degrees North of the Equator and South East of India, separated from it by the Gulf of Mannar, Palk’s Bay and Palk Strait, which at its narrowest point, Rameswaram in India and the Jaffna Peninsula, is less than 80 km wide. The sea crossing between Rameswaram in India, and Mannar Island, off the North-West coast of Sri Lanka, is only around 32km. There is evidence of a natural land bridge connecting Sri Lanka with India at this point, and indeed this vanished causeway, only a few meters below sea level, is still known as Adam’s Bridge. This close proximity to the subcontinent has meant that Sri Lanka’s history and ecology have always been exposed to strong influences from its larger neighbour.