Wallowa Mountains

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Wallowa Mountains and Wallowa Lake in early summer
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Wallowa Mountains and Wallowa Lake in early summer
Six mile meadow, located on the trail to Fraser Lake in the Wallowa Mountains
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Six mile meadow, located on the trail to Fraser Lake in the Wallowa Mountains

The Wallowa Mountains are a mountain range located in the Columbia Plateau of northeastern Oregon in the United States. The range runs approximately 40 mi (64 km) northwest to southeast in southwestern Wallowa County between the Blue Mountains to the west and the Snake River to the east. The range is sometimes considered to be an eastern spur of the Blue Mountains.

Much of the range is designated as the Eagle Cap Wilderness Area, part of the Wallowa-Whitman National Forest. The range is drained by the Wallowa River, which flows from the north side of the mountains, and its tributary the Minam River, which flows through the west side of the range. The Imnaha River flows from the east side of the range. Many geologists believe the Wallowa Mountains in northeastern Oregon are a displaced fragment of the Insular Belt.[citation needed]

The highest point in the range is Sacajawea Peak, with an elevation of 9838 ft (2999 m). Sacajawea is the 6th tallest mountain in Oregon and the tallest mountain in Oregon outside of the Cascade Range.