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The Issaquah Alps is the unofficial name for the highlands near Issaquah, Washington, a suburb of Seattle, including Cougar Mountain, Squak Mountain, Tiger Mountain, Taylor Mountain, Rattlesnake Ridge, Rattlesnake Mountain, and Grand Ridge. The term was invented in 1977 by noted nature author Harvey Manning within the pages of his trail guidebook Footsore 1, elevating their status from foothills to "Alps" to advocate preservation. Manning himself lived on a developed section of Cougar Mountain in his "200 meter hut".

A paraglider take off ramp on Poo Poo Point on Tiger Mountain. Squak Mountain in background.
A paraglider take off ramp on Poo Poo Point on Tiger Mountain. Squak Mountain in background.

In 1979, Harvey Manning helped to found the Issaquah Alps Trails Club to care for the trails and to push for public ownership of the Alps. The IATC, which is headquartered in Issaquah (nicknamed "Trailhead City"[1]), conducts frequent guided hikes throughout the Alps.

The Issaquah Alps follow Interstate 90 from the shore of Lake Washington almost to the western face of the Cascade Range. The hills are composed of andesitic volcanic rock lying on top of older tightly folded rocks from the coastal plain of the North Cascade subcontinent that docked with Washington about 50 million years ago as the entire continent of North America moved west across the ocean. The Alps were heavily eroded by glaciers in the last ice age. The Vashon lobe of the ice sculpted Rattlesnake Ledge, steeply carved the east and west sides of Squak Mountain, and deposited a large erratic on Cougar Mountain, Fantastic Erratic.

Cedar Butte rises abruptly from the moraine between Rattlesnake Ledge and the absolute front of the Cascades. It is sometimes considered part of the Issaquah Alps but it is a relatively young symmetrical volcanic cone and is therefore more closely related to neighboring Mount Washington to the east than the old weathered hills of the majority of the Alps.


Summits


Rattlesnake Ledge
Rattlesnake Ledge

References


  1. "Regional Trails in the Issaquah Area". City of Issaquah. Archived from the original on 2008-06-03. Retrieved 2009-09-13. {{cite journal}}: Cite journal requires |journal= (help)



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[de] Issaquah Alps

Die Issaquah Alps sind der inoffizielle Name für eine Gipfelkette in der Nähe von Issaquah, einer Vorstadt von Seattle, zu denen der Cougar Mountain, der Squak Mountain, der Tiger Mountain, der Taylor Mountain, die Rattlesnake Ridge, der Rattlesnake Mountain und die Grand Ridge gehören. Der Begriff wurde 1977 von Harvey Manning, einem bekannten Autor von Wander- und Kletterführern, auf den Seiten seines Wanderführers Footsore 1 eingeführt; er hob damit ihren Status von unbenannten Gebirgsausläufern zu „Alpen“, um für ihren Schutz einzutreten. Manning selbst lebte in einem erschlossenen Bereich des Cougar Mountain in seiner „200-Meter-Hütte“.
- [en] Issaquah Alps



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