Where was The Adventures of the Wilderness Family filmed?

1975 film directed by Stewart Raffill

The Adventures of the Wilderness Family (1975) was filmed in Summit County and Gunnison National Forest, 2 places named in its Wikipedia article, in the United States. 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

Places per Wikipedia's article

The Wikipedia article names 2 places. Each links to the sentence that says so.