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(KSL News) Some back-country land in Zion National Park is closing today.
Today crews will begin aerial application of herbicide to more than 3,000 acres burned in a wildfire this summer. That means parts of the West Rim Trail and the northeast corner of the park will be closed until November 10.
The herbicide application will minimize the regrowth of cheatgrass, an invasive nonnative plant that's highly flammable.
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(The Associated Press contributed to this report)