History ❯Natural History

Geological Events

Park Management Earthquake History Earthquakes Permian Period Seismic History Tsunami Events Cascadia Earthquake

Virginia Tech Study Warns of 15% Chance of Cascadia Megaquake Triggering 1,000-Foot Tsunami

New research highlights catastrophic risks to Alaska, Washington, and Hawaii, with limited evacuation time and extensive coastal impacts projected.

World’s Largest Cliff-Top Boulder Identified in Tonga, Moved by Ancient Mega-Tsunami

Mega-Tsunami Threat Looms Over Alaska, Hawaii, and US West Coast

Magnitude 6.1 Earthquake Strikes Near Kasos, Greece

Turpan-Hami Basin Identified as Crucial Refugium During Earth's Largest Mass Extinction

Utah's Iconic Double Arch Collapses After 190 Million Years