• Rainbow over Half Dome

    Yosemite

    National Park California

Wildlife and Other Sightings: Balloons

September 15, 2012 Posted by: BW – Mather District Volunteer Interpretive Ranger

Balloons
  
Balloon - orange  Balloon - yellow

Balloon - blue  Balloon - mylar

Summer 2012
What are these balloons doing in Yosemite? These pictures were all taken at off-trail locations in the park wilderness, miles from any developed area. When helium filled balloons escape from parties or graduations, they rise quickly into the atmosphere, sometime reaching heights of five miles. At this point they either burst and fall to earth or get carried by the wind until they slowly deflate and sink. Either way, they can travel large distances, including into the backcountry of Yosemite. Latex balloons will ultimately biodegrade, but Mylar - or more correctly, metalized nylon - balloons, ribbons, and other plastic items will take hundreds of years to break down (and even then they won't decompose, only becoming microscopic pieces of plastic). The next time you are at a party, remember Yosemite and hang on tight to that balloon!  

wildlife




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Did You Know?

El Portal Boulder Bar

At the east end of El Portal, just west of Yosemite National Park’s boundary, changing river gradients, glacial history, and powerful floods have created a boulder bar with boulders much larger than typically found in such deposits. This is no ordinary boulder bar, however, for it contains massive boulders over a meter in diameter and weighing many tons.