• Rainbow over Half Dome


    National Park California

Help with Videos

In order to view video on these web pages, you need either Adobe Flash (version 8 or higher) or Apple Quicktime (version 7 or higher).

If you play a video and only hear sound, it may be because you have an old version of Flash (upgrade now).

If you click on a video link and the video doesn't play, you can also right-click on the link and choose "save target as" or "save link as" to save the file to your computer, then play it from Quicktime.

Please let us know if you have any other questions or problems.

Did You Know?

El Portal Boulder Bar

At the east end of El Portal, just west of Yosemite National Park’s boundary, changing river gradients, glacial history, and powerful floods have created a boulder bar with boulders much larger than typically found in such deposits. This is no ordinary boulder bar, however, for it contains massive boulders over a meter in diameter and weighing many tons.