- The "volcanic ash" was really fine newspaper shavings.
- Most of the film's exteriors were shot in Wallace, Idaho, and Dante's Peak and surrounding scenery were then digitally added.
- A great many special effects in the movie were practical special effects, using real-world models or full-size properties and vehicles.
- All crater scenes were shot at Mt St Helens
- The dogs that played Roughy were wolf hybrids (part wolf and part Airedale Terrier).
- According to director Roger Donaldson on the DVD commentary the camera Pierce Brosnan uses when he first investigates the volcano surroundings is Brosnan's own.
>>> WARNING: Here Be Spoilers <<<
Trivia items below here contain information that may give away important plot points. You may not want to read any further if you've not already seen this title.
- SPOILER: WILHELM SCREAM: When Paul Dreyfus (Charles Hallahan) falls into the white lava (mud flow) when the bridge tips over.
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