The Old Man of the Lake is a tall tree stump located in which country?

The Old Man of the Lake is a 30-foot (9 m) tall tree stump, most likely a hemlock, that has been bobbing vertically in Oregon's Crater Lake since at least 1896.

The stump is about 2 feet (61 cm) in diameter at the waterline and stands approximately 4 feet (1.2 m) above the water. Its surface has been bleached white due to photodegradation. The exposed end of the floating tree is splintered and worn but wide and buoyant enough to support a person's weight.

"Fontinalis", a moss present in the waters of Crater Lake at a depth of 394 feet (120 m), also grows on the Old Man of the Lake, the only place the moss is found near the surface.

Joseph S. Diller published the first geology of Crater Lake in 1902, the same year the area became a national park. In his work, Diller briefly describes a great stump he had found in the lake six years earlier, in a report dated 1896. Preliminary carbon dating of the stump has suggested that the tree itself is at least 450 years old.