Positra is famous for the pearl fishing in Okhamandal region. An onshore exploration revealed a few hero stone to the extreme west of the village Positra and this palce is called as Jhapa. One of them had boat motif. The local information suggests that these memorial stones were erected in the memory of seven persons of this village who died due to boat capsizing. These memorial stones are engraved with boat motif and horse riders. The boat motifs on the hero stones indicate the importance of those persons involved in maritime activity in this region.
A late medieval site was noticed at Dablo about 4 km on the eastern side of the village Positra. A large number of the late medieval pottery were collected.
A late medieval site was noticed at Dablo about 4 km on the eastern side of the village Positra. A large number of the late medieval pottery were collected.