A 30′ long stump of what is probably a hemlock tree has been floating vertically, bobbing up and down, in Crater Lake, in south-central Oregon in the western United States, for more than 120 years. How much longer it has been floating, no one knows. Carbon dating suggests that the log is around 450 years old. The floating stump has been given the name the Old Man of the Lake.
Joseph S. Diller, the first geologist to study crater lake near the turn of the 20th century, described the floating tree stump in a report dated 1896. About 30′ long overall and two feet in diameter at the waterline, the stump floats about four feet above the water. It is buoyant enough to support a person’s weight. Why has the log floated vertically for so long? No one really knows.