Knik Arm is the estuary where Alaska’s Knik River meets Pacific Ocean water. Adjacent to Northern Lights Boulevard in Anchorage, Earthquake Park shows the physical impact of the quake that struck there on Good Friday, March 27, 1964. Cliffs as tall as 65 feet and buckling ground are a reminder of the violent movement that took place when North America’s most powerful quake destroyed parts of Anchorage, killing 100 people.