Every fall, the monarch butterflies migrate back to their breeding grounds in California. These fascinating and stunningly beautiful creatures weigh only a gram, yet travel extraordinary distances to complete their lifecycle. In the early spring, deep in the Yosemite valley, the sun warms the wet ground, forming clouds of misty fog.
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
