Located on the West Thumb Geyser Basin the vents of the aptly named Lakeshore Geyser are often underwater in the spring and summer when the water level of Yellowstone Lake is higher due to snowmelt. These geysers will stand out and show their steam from hot boiling water when the water tide is low, but at high tide the geyser submerges with the lake water. This geyser was said to have erupted up to 50 feet (15 meters) in the 1920s and 1930s. Lakeshore Geyser still boils vigorously and nearly continuously and often erupts a few feet. However, the last known major eruption was in 1970.