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

    North Cascades

    National Park Washington

Acoustic Monitoring Site: Thunder Knob

Monitoring team on Thunder Knob. Image Credit: NPS/NOCA
Monitoring team on Thunder Knob.
NPS/NOCA
 

June 2010
Located near a popular day hiking trail, this site was a mix of front country and backcountry. The highway is just a mile below, and vehicle traffic is frequently audible. However, this site is not without natural sounds as well. The sound of a nighthawk performing his dive was audible here.

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

 
 
 
 

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