• 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: Rainbow Loop Trail

Monitoring equipment at Rainbow Loop. Image Credit: NPS/NOCA
Monitoring equipment at Rainbow Loop.
NPS/NOCA
 
Bear damage to equipment at Rainbow Loop Trail. Image Credit: NPS/NOCA

Bear damage at Rainbow Loop Trail.

NPS/NOCA

July 2009
The Rainbow Loop site was located off the popular Rainbow Loop trail in Stehekin. Natural sounds were most evident at this site, although helicopter noise was present due to fires in the area. During the site deployment, a curious bear knocked over the equipment and tore the microphone windscreen.


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

 
Bear vs microphone Image Credit: NPS/NOCA

Bear vs microphone

 
Birds and bugs. Image Credit: NPS/NOCA

Birds and insects

 
Hawk call. Image Credit: NPS/NOCA

Hawk

 
Thunderstorm. Image Credit: NPS/NOCA

Thunderstorm

 
Heavy helicopter during fire. Image Credit: NPS/NOCA

Helicopter during fire

 
Crickets at Rainbow Loop. Image Credit: NPS/NOCA

Crickets

 
Tree fall Image Credit: NPS/NOCA

Tree fall

Did You Know?

Long horned beetle

There are more insects in the Park than any other group of animals; in fact, 95% of all animal species on earth are insects. Take your time to explore the breathtaking world of butterflies, beetles, and bugs. More...