In the lower valley, a foraging black bear attacks a colony of ants, which quickly rally to defend themselves. At its driest in summer and fall, the park is at the mercy of forest fires. One of the largest ever, the Rim Fire, broke out in the autumn of 2013, and burned out of control for over ten weeks.
If you’d like to watch this and more videos, join our free trial.
Spanish
French
German
Italian
Chinese
English 
Español
Français
Italiano
Deutsch
Português
