STS068-212-034 De Tour Passage, Michigan, U.S.A. October 1994 Sediment-laden Saint Marys River and the De Tour Passage into northern Lake Huron, important links in the Saint Lawrence Seaway, are featured in this northeast-looking, low-oblique photograph. Two large islands are discernible--Drummond Island (right top) and Saint Joseph Island in Canada (left center). Two highly reflective objects are probably locations of mining operations. Small Caribou Lake is apparent west of the De Tour Passage.