(NEXSTAR) — The busiest months for America’s national parks are fast approaching, and while some may be disrupted by staffing shortages this summer, officials are still hoping to see you at the parks.

Before you visit some, however, you may need to make a reservation.

While more than 300 national parks are free to visit at any time, others utilize timed entry and reservation methods to combat crowds, preserve the natural beauty and guarantee you get a parking spot (sometimes in addition to an entrance fee).

There are two parks — Mount Rainier and Yosemite — that required timed-entry reservations in 2024 but have not released details as of late March.

A new reservation system has been approved for Yosemite, SFGate reported on Friday, citing an internal source. According to details provided to the outlet, reservations are expected to be required to enter the park from mid-June to mid-August, and on the weekends from late May to mid-June and again from mid-August through the end of the month. The park says it "anticipates sharing details about this year's reservation system in the near future."

Here’s a look at the national parks with those requirements this summer:

Rocky Mountain National Park

If you’re planning to visit the Colorado park between May 23 and mid-October, a reservation will be required to get in during certain hours.

There are two timed-entry reservation options. The standard, required between 9 a.m. and 2 p.m., gives you access to the park and the outlying areas but not Bear Lake Road. If you want to visit Bear Lake Road, you’ll want the second timed-entry reservation. This option is required between 5 a.m. and 6 p.m., with re-entry to Bear Lake Road permitted after 2 p.m.

The first........

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