Where was Grass filmed?

1925 film by Merian C. Cooper, Ernest B. Schoedsack

Grass (1925) was filmed in Karun River and Zard Kuh, 2 places named in its Wikipedia article, in Iran. 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.

See them on the map → Wikipedia Source data