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  • Road Closures Due to El Portal Fire

    The Big Oak Flat Road between Crane Flat and the El Portal Road is temporarily closed. There is no access to Yosemite Valley via the Big Oak Flat Road or Highway 120. Tioga Road is open and accessible via Big Oak Flat and Tioga Pass Entrances. More »

  • Campground Closures Due to Fire

    Crane Flat, Bridalveil Creek, and Yosemite Creek Campgrounds are temporarily closed. More »

  • Yosemite National Park is Open

    Yosemite Valley, Glacier Point, and Wawona/Mariposa Grove areas are open and accessible via Highways 140 and 41. Tioga Road is not accessible via Highways 140 and 41 due to a fire.

Wildlife and Other Sightings: Sulphur Shelf Fungus

July 26, 2012 Posted by: AH - Mather District Interpretive Ranger
Sulphur Shelf Fungus

Laetiporus gilbertsonii

Up close image of sulphur shelf fungus growing on a tree     Sulphur Shelf Fungus growing up a charred tree stump

July 19, 2012
Trail from White Wolf to Harden Lake

This charred red fir stump in the recently burned area near Harden Lake was oozing with Sulfur Shelf Fungus. These bright yellow/orange polypore mushrooms are fairly common throughout certain parts of Yosemite since the fungus body, growing within the wood of a variety of tree species, requires little moisture in order to fruit. This particular clustering was saturated with water after some rain earlier in the day. This is one of the showier fungi participating in the backcountry recycling program that will help convert this charred stump back into forest nutrients and new forms of life.

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Did You Know?

ARC Students journaling near Hetch Hetchy

Adventure Risk Challenge (ARC) brings youth to Yosemite National Park each summer for a dynamic literacy and leadership immersion program. ARC works with students, boosting academic and leadership skills through a variety of programs, including a 40 day experience in Yosemite full of adventure and intensive learning.