Each year thousands of people visit the Boulder Cave Day Use Area (DUA) located on the Naches Ranger District. The U.S. Forest Service says because so many people visit every year they're implementing a timed reservation system for visitors starting on May 24. The day use area includes Boulder Cave Trail, River Walk Barrier Free Trail, picnic area, and shelter.

THAT'S A LOT OF PEOPLE IN THE CAVE

Forest officials say they see upwards of 50,000 people visit every year with many turned away because there's no parking. A press release says the "high public demand and limited parking and access at the site have made it difficult to manage visitor use in recent years. The timed reservation system will increase public safety, reduce public frustration due to long wait times, and create a more enjoyable visitor experience by reducing congestion."

IF YOU PLAN A TRIP DO IT 2 WEEKS IN ADVANCE

If you plan a trip this year remember you'll need to make reservations in advance on the Recreation.gov website: https://www.recreation.gov/timed-entry/10089740; or by calling 1-877-444-6777. You can make reservations 14 days in advance. Same day reservations are not available.Reservations will guarantee you'll have a parking space.

THE RESERVATIONS AREN'T FREE

Forest officials say timed tickets cost $5 per vehicle with a $2 service charge per transaction. They say the "option to use the Northwest Forest Pass and other applicable passes remains in effect and this information will need to be provided when reservations are booked."

RANKED: Here are the most popular national parks

To determine the most popular national parks in the United States, Stacker compiled data from the National Park Service on the number of recreational visits each site had in 2020. Keep reading to discover the 50 most popular national parks in the United States, in reverse order from #50 to #1. And be sure to check with individuals parks before you visit to find out about ongoing, pandemic-related safety precautions at www.nps.gov/coronavirus.

LOOK: 25 must-visit hidden gems from across the US

From secret gardens to underground caves, Stacker compiled a list of 25 must-visit hidden gems from across the United States using travel guides, news articles, and company websites.

LOOK: Must-do activities at every national park

Stacker lists the must-do activities at every national park ranked by the annual number of visitors. 

See the Must-Drive Roads in Every State

More From News Talk KIT