Olallie State Park - Washington

US National Parks and Monuments Travel Guide: US-Parks.com

Park Overview

Olallie State Park is a day-use park in the foothills of the Cascade Mountains. It features dramatic Twin Falls, cliff formations, riverbanks and living old-growth trees up to 14 feet in diameter.


"Olallie" is the Chinook Jargon word for "berry." The park is rich in huckleberries.

Park Features

A one-mile hike off exit 34 leads visitors to two spectacular waterfalls, including the 100-foot cascading Twin falls. Old-growth trees 12 to 14 feet in diameter add color to the park.

Interpretive opportunities

An interpretive trail at Weeks Falls educates visitors on the history of an old wagon trail that once went through the middle of the park.

Physical Features

The area abounds in huckleberries. The glory of giant old-growth trees vie with the grandeur of two waterfalls. An 80-foot bridge connects Twin Falls and Weeks Falls, located one mile into the park. The falls are particularly spectacular in winter when the water volume dramatically increases.


20606 SE 56th St., Issaquah, WA 98027


Located four miles east of North Bend, Wash., on the I-90 corridor in King County

From eastbound I-90

Take exit 38 and turn right at stop sign. Drive one half mile to park entrance on left.

From westbound I-90:

Take exit 38 and turn left at stop sign. Drive a half mile to park entrance on right.

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