Factual error: After the volcanic eruption, there's a scene where we see our heroes going across a lake, which has been turned to acid by the lava. If this acid is strong enough to corrode the propeller, then surely the fumes would be destroying their lungs, in which case they should be dead, or close to it.

Dante's Peak (1997)
Ending / spoiler
Directed by: Roger Donaldson
Starring: Pierce Brosnan, Linda Hamilton, Jamie Renee Smith, Jeremy Foley
Harry, Rachel, her two children, and the dog are saved from the explosion of the volcano.
Annette
Harry Dalton: I've always been better at feeling out volcanoes than people and politics.
Trivia: When we see Paul in the van as it is taken over by the overflowing river, just as he hits the water, we hear the Wilhelm scream.
Question: How come Graham was able to drive a car up to Ruth's house but couldn't for the life of him figure out how a telephone worked? When it was still ringing he said "Hello" thinking she'd answered.
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Answer: He's young and he and his sister are alone. He's worried about his Grandma and she's not answering the phone. He's saying hello because he desperately wants her to answer so he knows she's OK. He feels helpless just letting the phone ring.
The_Iceman