The Geographical Dictionary of Ancient and Mediaeval India c5.s3.52

c5.s3.52

Dhanu-tîrtha—On the eastern extremity of the island of Râmeśvaram in the Palks' Strait, ten or twelve miles from the temple of Râmeśvara. It was caused by Lakshmaṇa piercing the water with his bow. It is called Dhanushkoṭi Tîrtha in the *Skanda Purâṇa* (Setubandha-khaṇḍa). Cape Kory of Ptolemy, where the island of Râmeśvaram terminates, is the Sanskrit word Koṭi or Dhanuḥ-koṭi meaning the tip or corner of a bow (see McCrindle's *Ptolemy*, p. 60). Its identification with the Paumben passage is not correct.