[1] One of the ruins of the Jaffna kingdom, Yamuna Eri is located near the Mantri Manai palace and the Cankilian Thoppu arch.

According to the chronological historical book Yalpana Vaipava Malai, it was built during the reign of Jaffna Kingdom King Cinkai Ariyan Cekaracacekaran I.

Translation: ...he afterwards built the city of Nallur with all its ramparts, gates, mansions, palaces, towers, flower-gardens, baths, stables for elephants and horses, halls of justice, pleasure-houses, dwellings for Brahmans and warriors....

[2] Local legends have it that Yamuna Eri was used by the Queen of Jaffna Kingdom, and was linked to Mantri Manai ("the minister's palace") by an underground tunnel.

Yet another legend has the pond being used for offering ritual baths to the idol of Kartikeya, the primary deity of the Nallur Kandaswamy temple.