The island of Sri Lanka lies in the Indian Ocean, to the southwest of the Bay of Bengal and to the southeast of the Arabian Sea. It is separated from the Indian subcontinent by the Gulf of Mannar and the Palk Strait. According to Hindu mythology, a land bridge to the Indian mainland, known as Rama's Bridge, was constructed during the time of Rama by the vanara architect Nala. Often referred to as Adam's Bridge, it now amounts to only a chain of limestone shoals remaining above sea level. According to temple records, this natural causeway was formerly complete, but was breached by a violent storm (probably a cyclone) in 1480. The width of the Palk Strait is small enough for the coast of Sri Lanka to be visible from the furthest point near the Indian town of Rameswaram.