Alan H. Kelso de Montigny
Alan H. Kelso de Montigny ( -1972) was an American anthropologist of Dutch extraction, who is probably best known for his 1949 booklet How Did Language Originate.
He also identified a feature in the eastern Caribbean that appeared to be that of an asteroid impact. Kelso De Montigny published a paper in 1954 in which he concluded that this impact occurred 5,000-6,000 years ago destroying a landbridge linking the Lesser Antilles and the South American mainland and furthermore was possibly instrumental in the destruction of Atlantis. He arrived at his dating theory after collating native traditions in the region.
This impact may be connected with the creation of the Carolina Bays and/or the other impact sites in the Atlantic as noted by Otto Muck.