Near Park Lake Road Northeast (Washington Route 17) 2 miles south of U.S. 2, on the left when traveling south.
Flood waters, perhaps 300 feet above you, once rushed over these cliffs. During the ice age, glaciers to the north blocked the Columbia River and forced it to find a new route. The river, swollen from melting glacial ice, began to carve a new . . . — — Map (db m129678) HM
Near Park Lake Road Northeast (Washington Route 17) 2 miles south of U.S. 2, on the left when traveling south.
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.
Gouging Deep Coulees The powerful floods cut . . . — — Map (db m129681) HM
Near State Highway 155, on the right when traveling north.
Near this site President Roosevelt, accompanied by Mrs. Roosevelt delivered the address dedicating Grand Coulee Dam. Nearly 20,000 people attended the ceremony which was preceded by an inspection of the dam’s construction. — — Map (db m99855) HM
Near Park Lake Road Northeast (Washington Route 17) 2 miles south of U.S. 2, on the left when traveling south.
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 last . . . — — Map (db m129680) HM
Near Park Lake Road Northeast (Washington Route 17) 2 miles south of U.S. 2, on the left when traveling south.
These cliffs are skeletal remnants of what was once the world’s largest waterfall. They bear stark witness to the tremendous power of catastrophic floods that swept over Eastern Washington at the end of the last Ice Age.
The falls began 20 mi. to . . . — — Map (db m129677) HM
Near State Highway 155, on the right when traveling north.
Grand Coulee Dam is the key structure in water utilization for the Columbia River Basin. The dam began operation in 1942 and is one of the world’s largest concrete structures. It is a mile long and contains almost 12 million cubic yards of concrete . . . — — Map (db m99853) HM
Near Park Lake Road Northeast (Washington Route 17) 2 miles south of U.S. 2, on the left when traveling south.
The sheer cliff in front of you was once the world's greatest waterfall. From here, you see only the western portion of this remarkable Ice Age floods feature. With the end of the last Ice Age, floodwaters no longer swept through Grand Coulee, . . . — — Map (db m129679) HM
Near Columbia Avenue (State Highway 155) south of Lincoln Avenue, on the left when traveling south.
Begun in time of adversity it stood in war as a sentinel of strength safeguarding the nation. Forever a monument to those who shared in its conception and its construction in peace it is the key to new American frontiers of opportunity in . . . — — Map (db m129615) HM
On Coulee Boulevard (Washington Route 155) 1 mile south of Northrup Road, on the right when traveling south.
Indians, fur traders, military expeditions and settlers traveled where you are now standing. A major Indian trail passed at this location. Alexander Ross passed here in 1841. John Works, Hudson's Bay Company was here in 1825. The famous botanist, . . . — — Map (db m129671) HM
On 1st Avenue Northwest west of C Street Northwest, on the right when traveling east.
Ephrata was a summer Indian camp. Hundreds of Indians spent weeks gathering roots at the springs west of here. Ephrata was the gateway between Walla Walla & Okanogan. Indians, military expeditions, and wagons traveled here in 1880. The first . . . — — Map (db m129093) HM
Directly across the Columbia River is Ginkgo Petrified Forest State Park, covering 6,000 acres.
Although the presence of petrified wood had been reported as early as 1898, the first indication of its presence in quantity in this vicinity was . . . — — Map (db m92611)
Until recent times the Wanapum Indians inhabited the banks of the Columbia River from Beverly Gap to where it is joined by the Snake River near Pasco about 75 miles south.
The Wanapums were a very religious and peaceful people living on fish, . . . — — Map (db m92610) HM
On State Highway 28 at Road J Northeast, on the right when traveling east on State Highway 28.
Indians camped along Crab Creek in Stratford to gather roots and other food. The main Indian trail came past Stratford across the creek. The Indian trail branched here and one went past Pinto Dam. Lt. Symons came past here while laying out military . . . — — Map (db m129096) HM
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