True:
*It is true that scientists can test the water in lakes near on the volcano to look for gasses that could point to a soon eruption
* It is true that lava can break through hot springs
* You can tell that an eruption might happen when carbon dioxide trees and animals start to die in the forests near the volcano like the scientist were talking about in the movie.
Untrue:
* It would be almost impossible for the truck drive over the bridge while the lahar was so close
* They wouldn't be able to out drive the pyroclastic cloud, because its too fast.
* Dante's Peak is not a real volcano