Shri Ram had formed a sweet water spring by hitting an arrow for his army. This well is located in the sea at the distance of 10 km from Tang Chimdam and it still has sweet water. The water of this well becomes sweeter during the months of Baishakha and Aashada of Hindu calender.
Valmiki Ramayana 6/21 full chapter, 6/22/48 to 87 Manas 5/49/3 to 5/50/4, 5/57 doha To 6/1/1.This reference is also related to the remains of Setu.