what are upright pertrified trees
The Yellowstone petrified forests In some places in Yellowstone Park, erosion of a hillside reveals layers of upright petrified trees. At Specimen Ridge, there are said to be 27 layers, while Specimen Creek contains about 50.This means that the Specimen Creek formation is especially hugeâits total vertical height is 1,000 meters (3,400 feet).ut in the petrified âforests,â the prostrate (lying down) trees tend to align in the same direction. Also, even the upright trunks are turned so their long axis is aligned the same way. This is consistent with a common force, e.g. moving water or mud, having acted on both after they were uprooted.