Rama Setu: made by vana nara
I submit that vaanara are NOT monkeys. The term may be interpreted as vana + nara (forest dwellers) — the early maritime explorers of naaga vams’a.
If the link between India and Srilanka was a convergence of collapses canyons or upsurge (as in Allah Bund of Sarasvati civilization area), the physical structure over this geological feature, the land-link between India and Srilanka could have been a construction by vaanara sena to enable the army to march into Srilanka, for Shri Rama to win over a-dharma.
• Abstract Two suites of slumps from opposite margins of the Gulf of Mannar, between Sri Lanka and southern India, have met and coalesced. The “Eastern Comorin” Slump is the more coherent of the two with a length of 70 to 100 km. The “Colombo” side slump consists of two to four blocks 15 to 35 km in length. Both slump-suites decrease to the south. A paleoslump underlies the western toe of the East Comorin Slump at a depth of some 800 meters. To the south, an enlarging and deepening submarine canyon marks the area of slump coalescence. See William Vestal and Allen Lowrie, Geology and Geophysics Branch-Code 7220, U.S. Naval Oceanographic Office NSTL Station, 39522, MS
The collapsed canyons perspective is remarkable, given the bathymetry of the region. Within 15 kms. south of Rama Setu, the ocean becomes atala-paatalam, reaching upto 3000 m. depth and beyond. This depth cannot be explained by a mere accumulation of sand-shaols as in the Great Barrier Reef of Australia (which is always called a reef, while Rama Setu is always called a setu, a bund, a bridge).
Setu must have been man made
Many pieces of evidence from the science of ocean technology back the argument that Ram Setu was man-made. Geological and geophysical survey of the Sethusamudram Shipping Channel Project reveal that to the north of Adam’s Bridge on the Palk Bay side, the formations have undergone down faulting and that the Adam’s Bridge came up as an up-thrown block, a fact confirmed both by the bathymetry survey and the NASA land image.
The study reveals that about 18,000 years ago, the sea level was 130 m lower than what it is today. Even now, on the east and west coasts, submerged corals occur around 1 m to 2 m below the sea level, which must definitely have been the coastal zones. During the last glacial age, the area from Sri Lanka and further south was a contiguous zone due to the lowered sea level, which later rose due to melting of glaciers in the Antarctic area.
The coral formations study at Pamban, Rameswaram and Thookkudi by PK Banerjee proved that 7,300 years ago, the sea level on the southern part of the country was about 3.5 m above the present level. Subsequently, between 5,000 to 4,000 years ago, the sea level went down and rose to more than 2 m above what it is today.
The geological logging of the boreholes drilled by the National Institute Of Ocean Technology in the inter-tidal areas of Adam’s Bridge shows that in all the boreholes, the top portion is occupied by recent marine sands. Almost all boreholes between 4.5 and 7.5 m intersected hard formations of calcareous sandstones and corals. Corals normally grow atop hard formations for the purpose of stability. As the sea level rises, the coral colony grows up vertically to maintain the water depth 1 m to 2 m for survival.
But in case of Adams Bridge, the coral formations, with most of the coral rock pieces in the form of rounded pebbles of corals, hardly occur 1 m to 2.5 m in length and rest on loose marine sands.
People in ancient times must have used the less dense calcareous sandstones and corals to construct links between India and Sri Lanka. This cannot be ruled out in the light of the recent geological and archaeological findings of the raised Teri formations supporting rich assemblages of Mesolithic-Microlithic tools and bones and fossils of both human beings and animals, indicating human habitation and activity at Rameswaram-Tuticorin-Sri Lanka costs as early as 8,000 to 9,000 years ago.