"Munneshwaram Temple - Ramayana Sri Lanka "
It is believed that Munneswaram predates the Ramayana and a temple dedicated to Lord Shiva was located here. Munneswaram means the first temple for Shiva (Munnu + Easwaran). A Shiva Lingam was already here when lord Rama visited the place.
Lord Rama after his victorious battle left for Ayodhya with Sita in one of King Ravana's vimanas. He felt he was being followed by Bramhaasthi dosham (a malevolent black shadow) as he had killed King Ravana who was a Brahmin. When the Vimana was passing over Munneswaram, he felt the vimana vibrating, and
realised the "Brahmaasthi Dosham" was not following him at this particular point.