• View from Sourdough Mountain Overlook A view looking down onto Diablo Lake. Photo Credit: NPS/Michael Silverman, 2010.

    North Cascades

    National Park Washington

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  • Interstate 5 Bridge Collapse Detour

    I-5 is closed in both directions in Skagit County south of Burlington. WSDOT has published the following detour map. Also consider State Route 530 through Darrington from the south or State Route 9 from Bellingham and the Lower Mainland to reach the park. More »

Acoustic Monitoring Site: Easy Pass

Monitoring Easy Pass. Image Credit: NPS/NOCA
Monitoring Easy Pass.
NPS/NOCA
 

August 2009
This site was located at Easy Pass, 3.5 miles into the backcountry from SR 20. Natural sounds of marmots and rockfalls prevailed; however, vehicles were barely audible on clear, calm nights.

Click each title to hear a sound recording. Click on "Sound Clips" in the navigation to return to the map.

 
Rockfall

Rockfall

 
Marmot

Marmot

 
Hummingbird

Hummingbird

Did You Know?

Grizzly bear track in North Cascades National Park (1989). Photo Credit: NPS/NOCA/Roger Christophersen

Grizzly bear tracks can be a reliable indicator of species? Grizzly bear and black bear forepaw tracks are distinct from one another and often times better than a photo of the bear to confirm an observation. So don't just look up, look down.