|Image Name||Width x Height||Size|
|SIA3568.jpg||640 x 443||82K|
|SIA3568.jpg||1200 x 829||243K|
|SIA3568.jpg||3504 x 2418||1M|
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.