de Charpentier, Karl Friedrich Schimper and others had made the glaciers of the Alps the subjects of special study, and Goethe, Charpentier as well as Schimper had even arrived at the conclusion that the erratic blocks of alpine rocks scattered over the slopes and summits of the Jura Mountains had been moved there by glaciers. Charles Darwin published extensively on geologic phenomena including the distribution of erratic boulders. In his accounts written during the voyage of , Darwin observed a number of large erratic boulders of notable size south of the Strait of Magellan, Tierra del Fuego and attributed them to ice rafting from Antarctica. Recent research suggests that they are more likely the result of glacial ice flows carrying the boulders to their current locations. Examples Glacier-borne erratics Australia Exhumed erratics eroded from unconsolidated 270 Ma Permian glacial sediments can be found on the beach and in the park at Hallett Cove Conservation Park just south of Adelaide, and in other South Australian locations, such as Inman Valley. Canada Big Rock near Okotoks, Alberta, Canada. It is the largest erratic in the Foothills Erratics Train. Bleasdell Boulder, southern Ontario was described as "glacial" in origin by Reverend William Bleasdell in 1872 The Foothills Erratics Train is a deposit of rocks of many sizes. These deposits stretch in a narrow belt for about from Alberta's Athabasca River Valley to the southwest of the province. White Rock, British Columbia gets its name from a coastal erratic the size of a garage found on the beach at Semiahmoo Bay, right at the border with Washington. Boulder in Green Timbers Urban Forest in Surrey, British Columbia, described as a glacial erratic on the city website Estonia Ehalkivi (Sunset Glow Boulder) near Letipea, Estonia is the largest erratic boulder in the glaciation area of North Europe. Height 7 m, circumference 48.2 m, a volume of 930 m3 and a mass of approx 2500 tonnes. Finland Kukkarokivi, located close to Turku at the Ruissalo island in Southwest Finland. It is the largest in Finland; length about 40 m, width about 30 m, height 12 m, weight about 36,000 tonnes. Germany Colossus of Ostermunzel, Lower Saxony Der Alte Schwede, found during dredging of the river Elbe near Hamburg in 1999; oldest in Germany. Giebichenstein, Stöckse, Lower Saxony Glacial erratics on and around Rügen Republic of Ireland The Clonfinlough Stone, located in central Ireland, is covered with