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The price is jumping from $10 to $80.

This story originally appeared on Money.com.

For just $10, older Americans have been able to access all of the country’s national parks for the rest of their lives.

But come Aug. 28, that fee will raise to $80.

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On Monday, the National Park Service announced that it would be increasing prices for senior lifetime passes later this summer. The agency has offered its $10 lifetime senior park pass for American citizens who are 62 or older since 1994, and the price increase comes as a result of legislation approved by Congress in Dec. 2016 as a result of the National Park Service’s centennial.

The pass grants lifetime entry to more than 2,000 sites and parks across the country. Those who purchase the passes while they are $10 will still be able to use them without an additional charge, the National Park Service said Monday.

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The Park Service believes that even with the price increase, the pass is still a bargain for seniors. National parks like Yosemite, the Grand Canyon, Yellowstone, and others each charge $30 for entry for visitors.

“If a senior visits three of the $30 parks, she or he has already saved money,” Kathy Kupper, a spokesperson for the National Park Service, told MONEY last month. “Plus, the pass allows those traveling with seniors to enter the park with them.”

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Under the Obama administration, Congress approved the National Park Service Centennial Act, which raised park fees and addressed infrastructure issues in national parks. The legislation also created a new annual pass for seniors, which can be purchased for $20. If seniors buy four of the new annual passes, they can get a lifetime pass for no additional cost, the Park Service said.

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