Just prior to Blavatsky writing Isis Unveiled, an international
task force, led by the British ship Challenger and the U.S.
Dolphin, obtained the first map of the ocean floor. They lowered
buckets on ropes until they contacted the bottom. In the
twentieth century, sonar was invented to locate enemy submarines
and later it acquired the peace-time use of mapping more
accurately the ocean floor. Now satellites have obtained the
same information. An article in Discover Magazine March 1996,
displays this ocean feature with colored maps obtained
indirectly - a satellite detected gravity that implied ocean
bottom features. Blavatsky uses the then recently obtained
information on the floor of the Atlantic to justify her position
on Atlantis. She says the mid-atlantic ridge is a remnant of
that continent. No more striking confirmation of our position
could be given, than the fact that the ELEVATED RIDGE in the
Atlantic basin, 9,000 feet in height, which runs for some two or
three thousand miles southwards from a point