• Giant Sequoia Trees

    Sequoia & Kings Canyon

    National Parks California

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  • Sequoia and Kings Canyon National Parks Institute Stage 2 Fire Restrictions

    Effective July 28, 2014, the parks are in Stage 2 fire restrictions. See link below for more information. These restrictions will remain in place until further notice. More »

  • Road Construction Delays on Park Roads for 2014 Season

    Expect occasional 15-min. to 1-hour delays in Sequoia and Kings Canyon National Parks beginning Monday, June 2, weekdays only, between 5:30 a.m.-4:30 p.m., including delays to/from the General Sherman Tree, Crystal Cave, and Grant Grove. More »

  • Vehicle Length Limits in Sequoia National Park (if Entering/Exiting Hwy 198)

    Planning to see the "Big Trees" in Sequoia National Park? If you enter/exit via Hwy. 198, please pay close attention to vehicle length advisories for your safety and the safety of others. More »

  • You May Have Trouble Calling Us

    We are experiencing technical problems receiving incoming phone calls. We apologize for the inconvenience. Please send us an email to SEKI_Interpretation@nps.gov or check the "More" link for trip-planning information. More »

Building Removal

front-end loader lifts a cabin off its foundation

Heavy equipment was used judiciously in restoration of the Giant Forest.

NPS photo by Athena Demetry

Many of the buildings to be removed dated from the 1930s and contained lead-based paint and asbestos in floor coverings, wall board, pipe insulation, roofing, and other building materials. Polychlorinated biphenyls (PCBs) and mercury were present in some light fixtures. Removal and disposal of these materials had to conform to strict federal, state, and local regulations.

Smaller cabins were removed by lifting the intact building off its piers with a long set of forks attached to a loader bucket. This was the preferred method, resulting in little additional soil disturbance. Heavier cabins that could not be removed by lifting with forks were often dragged with a chain fastened around the base of the building. Because equipment travel was constrained to designated routes where soils were already compact, this method also resulted in minimal soil disturbance. Sometimes chains were run through doors and windows and the building lifted with the excavator. The largest buildings were demolished in place. Buildings were moved to a central area to be broken up, and the debris either loaded directly into containers or ground into chips using a large tub grinder for transport out of the park.

Did You Know?

Mineral crystals compared to size of a penny.

Most of the distinctive light-colored rock characteristic of the Sierra Nevada is a granitic rock called granodiorite. A huge formation of this rock, called a batholith, lies within the Sierra. Some 400 miles long and up to 50 miles wide, the Sierra batholith is one of the largest in North America. More...