Tag Archives: sapphire pool

On August 17, 1959, around 11:37 p.m., Yellowstone National Park was changed forever when a large quake shook man-made Hebgen Lake.

The 1959 Yellowstone Earthquake, all 40 seconds of it, was a defining moment in Yellowstone National Park’s history.

Geophysicist Robert “Bob” B. Smith will be presenting new findings on Old Faithful Geyser tonight in Jackson, WY.

Before the 1959 Hebgen Lake Earthquake, Sapphire Pool was a placid and majestic feature.