Zion National Park has changed its wilderness permit system to allow visitors to reserve last-minute slot canyon day use permits via an online reservation system.

Tempted to book a river trip in a national park this summer? If you're thinking of a white-water adventure in parks such as Dinosaur National Monument, Glacier National Park, or Canyonlands National Park, sooner in the summer just might be better than later due to the below-normal snowpack.

Facilities at Olympic National Park’s Lake Crescent Lodge are undergoing extensive renovations that are expected to be mostly complete for the 2012 spring opening.

Can you tell the difference between manta rays and spotted eagle rays at Biscayne National Park?