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Download Options
| Image Name | Width x Height | Size |
|---|---|---|
| SIA3570.jpg | 640 x 443 | 74K |
| SIA3570.jpg | 1200 x 829 | 218K |
| SIA3570.jpg | 3504 x 2418 | 1M |
Caption
The underside of this sandstone ledge contains downward bulges formed as a large animal (probably a brontosaur) walked on soft ground, pushing down and distorting the layers below. These tracks were made more than 150 million years ago.