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The Palouse to Cascades State Park Trail weaves together a diverse parade of landscapes filled with stories of land and people. The trail stretches much of the way across today’s Washington, from shrub-steppe and farmlands of the Palouse country on the eastern edge of the state, across the Columbia River, and up and through the Cascade Mountains to the lowlands surrounding Puget Sound.

The Bay of Despond

Today’s Jarrell Cove State Park was covered by glacial ice during the most recent ice age. The fingerlike waterways of South Puget Sound including the inverted Y shape of Jarrell Cove and Pickering Passage outside its entrance were excavated by highly pressurized meltwater streams that developed as the thousands-of-feet-thick ice began to melt. The park’s namesake cove features deep waters and a tall tidal range. Low tides yield extensive muddy banks.

Curlew Lake State Park is perched in a high valley in northeastern Washington that owes its landform features to Ice Age glaciers. The lake, six miles long, half a mile wide, and reaching a depth of 130 feet, is centered in the valley of Curlew Creek. The creek drains to the Kettle River, which wanders back and forth across the US/Canada border to its confluence with the Columbia River near Kettle Falls.

Yakima Sportsman State Park owes its preservation and its distinctive name to the generosity of a group of waterfowl hunting enthusiasts who purchased lands in the Yakima River floodplain in the 1940s.

Folds, Floods, Meanders and Mines

The park is situated in a geographic area called the Yakima Fold Belt, an area of central Washington where tectonic compression of the layered Columbia River Basalt lava flows results in a series of parallel ridges that run perpendicular to the force of the stress—kind of like kicking a rug creates ridges in the fabric.

Cape Disappointment State Park spreads over the land north of the point where the Columbia River and the Pacific Ocean meet. The park includes three headlands of basalt rock cliffs: Cape Disappointment overlooking the river, North Head above the strand of Long Beach, and McKenzie Head, midway between the other two headlands. The basalt bedrock of these wave-pounded cliffs are ancient lava flows that erupted on the ocean floor. Encountering the cold ocean water, the lava quickly hardened into bulbous masses geologists call pillow lava.

The Coast—Accretion and Erosion

Washington’s Pacific Ocean coast is a dynamic place! Coastal processes are constantly changing the Grayland Beach.

Clark Island Marine State Park preserves an entire long, narrow island along the northern edge of the San Juan Archipelago.

A Rocky Island

The San Juan Islands are distinct from most of Puget Sound in that they feature shorelines with exposures of hard bedrock, rather than the bluffs of clay, sand and gravel left by Ice Age glaciers that are predominant on most of Washington’s Salish Sea, the state’s inland saltwater passages.