Adam's Bridge, also known as Rama's Bridge or Rama Setu, is a chain of limestone shoals, between Pamban Island, also knoSri Lankawn as Rameswaram Island, off the south-eastern coast of Tamil Nadu, India, and Mannar Island, off the north-western coast of Sri Lanka. Geological evidence suggests that this bridge is a former land connection between India and Sri Lanka.
Floating STONE are part of Ram sethu in dhanushkodi, Rameswaram, India in 4k ultra HD

Source from : wikipedia