... , 0.5 -7 meters in width, and 0.1 -0 .4 meters in depth. No known geological processes seem responsible. Farther east, in Nor-ton Sound, methane eruptions from buried organic matter do blow out circular craters; but the elongated pits investigated by Nelson and Johnson are gouged in sand considered too permeable for gas-crater formation. Rather surprisingly, the gray whale has become suspect as a pit excavator. They feed in the area of the pits; and the pits, before enlargement by currents, are just the size of the whales' mouths. The whales apparently dredge up sediment and, with their baleen, strain out amphipods (shrimp-like crustaceans) from the sand. The coexisting narrow furrows turn out to be the work of walruses digging for clams. (Nelson, C. Hans, and Johnson, Kirk R.; "Whales and Walruses as Tillers of the Sea Floor," Scientific American, 256:112, February 1987.) Comment. The whale tale seems a reasonable explanation of the pits described by Nelson and Johnson, but how far in time and space can it be stretched? Whales do frequent the North Sea, but we do not know whether they or methane eruptions excavate the many craters observed there. As for the much larger Carolina Bays, which exist by the thousands in sandy, coastal terrain, who can say without further study. The Carolina Bays, like the whale-made pits of the Bering Sea, are oriented. One can imagine that, when the oceans stood higher ...

... North America. Mainstream archeologists contemptuously dismiss the Kensington Stone Rhode Island's Newport tower, and those runestones from Oklahoma; but hard-to-explain artifacts continue to crop up in the Canadian Arctic. Recently, there have been purported rivets from a Viking longboat and strand of Norse yarn from the Arctic tundra -- the latter carbon-dated as 800 years old. The Canadian Arctic is also the location of strange stone towers, stone foundations, and standing stones like that illustrated. Canadian author, F. Mowat, asserts that these structures in the far north are neither Eskimo nor Viking in origin. In his new book, The Farfarers, he claims that some 200 years before the Vikings built L'Anse aux Meadows, voyagers from northern Scot-land crossed the Atlantic in walrus-hide boats and established a colony in Newfoundland. Mowat bases his conjectures upon the strong similarities between the stone structures in the Arctic and those on the Orkneys and other islands in the north of Scotland. Quite understandably, the Icelanders, to whom Leif Ericsson is a national hero, greatly resent Mowat's theory. (Nickerson, Colin; "New Clues Emerge on Viking Voyages," Boston Globe, February 14, 2000. Cr. M. Colpitts.) Comment. The same argument -- similarity of rude stone structures -- is presented to "prove" that the hundreds of stone chambers found in New England and New York were built by Precolumbian visitors from Scotland and Ireland. From Science Frontiers #129, MAY-JUNE 2000 . 2000 William R. Corliss ...