Note Back to Main Text — Chapter II · PRE-COLUMBIAN VOYAGES.

This mention of the volcano and the hot spring is very interesting. In the Miocene period the Atlantic Volcanoes of the north Atlantic ridge. ridge was one of the principal seats of volcanic activity upon the globe; the line of volcanoes extended all the way from Greenland down into central France. But for several hundred thousand years this activity has been diminishing. In France, in the western parts of Great Britain and the Hebrides, the craters have long since become extinct. In the far North, however, volcanic action has been slower in dying out. Iceland, with no less than twenty active volcanoes, is still the most considerable centre of such operations in Europe. The huge volcano on Jan Mayen island, between Greenland and Spitzbergen, is still in action. Among the submerged peaks in the northern seas explosions still now and then occur, as in 1783, when a small island was thrown up near Cape Reykianes, on the southern coast of Iceland, and sank again after a year.[293] Midway between Iceland and Greenland there appears to have stood, in the Middle Ages, a small volcanic island discovered by that Gunnbjörn who first went to Greenland. It was known as Fate of Gunnbjörn's Skerries, 1456. Gunnbjörn's Skerries, and was described by Ivar Bardsen.[294] This island is no longer above the surface, and its fate is recorded upon Ruysch's map of the world in the 1508 edition of Ptolemy: "Insula hæc anno Domini 1456 fuit totaliter combusta,"—this island was entirely burnt (i. e. blown up in an eruption) in 1456; and in later maps Mr. Major has found the corrupted name "Gombar Scheer" applied to the dangerous reefs and shoals left behind by this explosion.[295] Where volcanic action is declining geysers and boiling springs are apt to abound, as in Iceland; where it has become extinct at a period geologically recent, as in Auvergne and the Rhine country, its latest vestiges are left in the hundreds of thermal and mineral springs whither fashionable invalids congregate to drink or to bathe.[296] Now in Volcanic phenomena in Greenland. Greenland, at the present day, hot springs are found, of which the most noted are those on the island of Ounartok, at the entrance to the fiord of that name. These springs seem to be the same that were described five hundred years ago by Ivar Bardsen. As to volcanoes, it has been generally assumed that those of Greenland are all extinct; but in a country as yet so imperfectly studied this only means that eruptions have not been recorded.[297] On the whole, it seems to me that the mention, in our Venetian narrative, of a boiling spring and an active volcano in Greenland is an instance of the peculiar sort—too strange to have been invented, but altogether probable in itself—that adds to the credit of the narrative.