This is excellent supporting evidence for the Ramayana legend being true. In Graham Hancock's book Underworld, he tells a small part of the tale:

"To build a bridge across the sea, the bears and monkeys hurled trees and rocks into the water which by the power of Rama stayed afloat. The Gods looked down enthralled as the monkey armies moved across the seas on Rama's bridge"

The bridge's unique curvature suggests that it is man-made. Or monkey & bear made. Or two mutations of human nicknamed monkeys and bears? Follow the link below for many images.