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The basalt you see in the dry distant hills and the rock under your feet holds a tale of dramatic change. The landscape tells a story of ancient floods, rivers of lava, and the impact of humans along the Columbia River. If you look carefully and . . . — — Map (db m82828)
Millions of years ago, some of the largest lava flows on earth poured over this area again and again. Enormous floods of molten lava flowed out from long, parallel vents, burying the area in more than 5,000 feet of basalt.
In all, more than 300 . . . — — Map (db m82825)
When Ice Age floodwaters rushed across Quincy Basin and down the Columbia River, they gouged chunks of basalt from the scabland cliffs in front of you. During the last Ice Age, this area was repeatedly swept by floodwaters that tore away layer after . . . — — Map (db m82829)
Raging Ice Age floodwaters carved spectacular features throughout eastern Washington, creating unique landscapes. Follow the path of the floods and discover more about this amazing story.
Under Water
During the largest floods, water . . . — — Map (db m82827)
After racing across eastern Washington, floodwaters converged on Wallula Gap, a single narrow outlet about 80 miles to the southeast. This natural constriction forced floodwaters to back up, creating a huge, temporary lake called Lake Lewis. Here at . . . — — Map (db m82830)
You are standing in the pathway of some of the largest floods ever known. They carved steep-walled canyons, sculpted immense waterfalls, and left behind landscapes found nowhere else on earth.
Massive Glacial Dams and Lakes
During the . . . — — Map (db m82826)
This landscape was built by ancient lava flows and sculpted by powerful Ice Age floods. Clues to this fascinating past are all around you.
Remains of a Fossil Forest
The park contains hundreds of pieces of petrified wood that were . . . — — Map (db m82824) HM
