Where was the Hills Have Eyes film series (Q19869476) filmed?

The Hills Have Eyes film series (Q19869476) has 2 titles (1977 to 1984). Wikidata records no filming place for them; Wikipedia names San Bernardino, Mojave Desert, Victorville, Apple Valley, Joshua Tree and 1 more place. Every place links to its source.

The productions, in order

Named in Wikipedia's own articles

Places named only in the titles’ Wikipedia articles.