PBS television services from KYVEDT-TV, 47, Yakima, WA.

Yakima, WA KYVE PBS 47 A3 HD

The geography of Seattle is a direct result of a huge ice sheet that scoured the landscape just 8,000 years ago.

Nick on the Rocks

The Giant Ice Sheet That Shaped Seattle

The town of Pateros, Washington, sits at the confluence of the Methow and Columbia Rivers in a landscape that has been dramatically shaped by ice and water over the past 20,000 years, including a terrace that mystifies geologists to this day.

3,000 Years of Ice and Floods at Pateros

Washington's most remote stratovolcano stands high in the Cascades, 50 miles from the waters of Puget Sound.

The Massive Mudflows of Glacier Peak Volcano

Anacortes, Washington, 160-million-year-old bedrock from the bottom of the ocean smashed together with sand, gravel and rock brought down from Canada 15,000 years ago.

Record of a Massive Glacier In Anacortes

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Towering walls of granite stand sentinel over Highway 20 at Washington Pass deep in the North Cascades.

Battle of the Batholiths at Washington Pass