Visitors will be able to enjoy a half-mile loop through the narrow passages and steep sections of the stunning marble cavern ...

From June 16 through Aug. 15, the park’s peak season, reservations will be required every day for entry between 6 a.m. and 3 ...

An analysis of data from 1999 through 2023 shows 93% of parks and wilderness areas saw improved air quality on clear days.

When April rolls around, national parks hit their stride – bursting with color, buzzing with wildlife, and brimming ...

There is, near the roof of Rocky Mountain National Park, a unique landscape rarely found in the National Park System.

This iconic climbing destination in Washington boasts rugged peaks, breathtaking views, and epic routes that every outdoor ...

Conservation and public-health groups sued Environmental Protection Agency Administrator Lee Zeldin today for his failure to take action to reduce smog pollution in the Phoenix metro area and Mariposa ...

The cave is one of about 275 known caves in Sequoia and neighboring Kings Canyon National Park. The park’s only publicly ...

Visitor traffic to U.S. National Parks is at an all-time high, but former parks directors warns the recent job cuts could ...