Where was Smash Palace filmed?
1981 film by Roger Donaldson
Smash Palace (1981) was filmed in North Island Volcanic Plateau and Horopito, 2 places named in its Wikipedia article, in New Zealand. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.
Places per Wikipedia's article
The Wikipedia article names 2 places. Each links to the sentence that says so.

