Roughly 7,700 years ago, give or take 150 years, Mount Mazama erupted and collapsed, creating a massive crater that would become Crater Lake. Fast-forward to this day in 1902, and Crater Lake National Park was established. With a maximum depth of 1,943 feet, equivalent to 3.5 Washington Monuments, Crater Lake is also the deepest lake in the US.
Date: May 22, 1960
Areas affected: Chile, Pacific Rim
Depth: 33 km (21 mi)
Max. intensity: XII (Extreme)
USGS ShakeMap for the May 22, 1960 Valdivia earthquake, which at an estimated magnitude of 9.5, is the strongest earthquake ever recorded.
(1960) Strongest earthquake ever recorded slams Chile.
Also on this day,
1843 | Oregon Trail
1980 | Pac-Man debuts
1992 | Carson signs off