Where was Rappadikalude Gatha filmed?
1978 film by K. G. George
Rappadikalude Gatha (1978) was filmed in Ernakulam and Fort Kochi, 2 places named in its Wikipedia article's Production section, in India. 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 Production section
Wikipedia’s Production section names 2 places. Each links to the sentence that says so.

