The Pamban lighthouse is one of the two lighthouses in the Rameswaram island in Tamil Nadu. It is also known as Pamban channel northwest point lighthouse.StructurePamban lighthouse was originally constructed in 1845, comprising a cylindrical tower with a balcony and lantern. It's pattern markings are horizontal white and black bands, with a white lantern and red roof. The lighthouse stands at 66ft (20m) tall, with a focal height of 95ft (29m) providing three white flashes every 9 s.The lighthouse is located on the north side of Pamban Island east of the Pamban Channel Bridge.