Yellowstone's thermal features and wildlife can present serious dangers to park visitors. Listen for tips on staying safe while visiting Yellowstone.

Yosemite National Park: Water in Yosemite is more dangerous than it looks, and stories like Matthew's are a common occurrence.

Yosemite National Park: Water in Yosemite is incredibly beautiful, but can be powerful and deadly. Sixteen people died in Yosemite's creeks and rivers between 2002 and 2011. Yosemite Search and Rescue rangers share their knowledge of common mistakes and how to avoid them.