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

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Nick on the Rocks

Much of Vancouver Island is covered by a layer of 230-million-year-old basalt, but erosion at select beaches has exposed layers of both older and younger rock that tell a story of continental collision and massive gaps in the rock record.

Missing Rock Record On Vancouver Island

On the edge of the Columbia River near Vancouver, Washington, Beacon Rock shoots 800 feet straight up from the valley floor.

The Remains of An Ancient Volcano at Beacon Rock

Nick on the Rocks

Missing Rock Record On Vancouver Island