how Yosemite Valley was formed
<PREVIOUS.. 470 - 220 million | 220 - 80 million | 80 - 25 million | 25 million | 25 - 10 million | 10 - 2 million | 2 million | 20,000 | 10,000 | Today ..NEXT> |
|
|
20,000 years ago: The glaciers melted out of Yosemite Valley. |