It's a fun spooky movie with a different look and without the usual nighttime menace. It's also an independent production that managed some notoriety, mainly for surprisingly impressive special effects. Actually, Equinox was sort of the Blair Witch Project of its daya bunch of unknowns hitting it lucky with a shoestring effort. If memory serves, the film even had a run at one of the prestige theatres along Hollywood Blvd. The effects are not so impressive by today's digital standards; however, by 1970's norms, they were the unexpected equal of any A-production.
The story itself is pretty well structured in flashback with an effective "hook" to get viewers interested. The plot doesn't make a whole lot of sense, but then it doesn't have to, since we've got King Kong's albino brother, a castle that comes and goes, a lost book of the occult, and a shape-shifting forest ranger who's definitely not Smoky the Bear. Most of the scenes are well staged, except when the ranger gets in the girl's face, contorts his lips, and slobbers, in what I suppose was a wacky metaphor for supernatural sex. Sharp-eyed viewers may recognize Frank Bonner (Boers) from TV's WKRP in Cincinnati as Jim. He's easily the most accomplished of an uneven cast.
In fact there's an appearance of a time warp between the clothing fashions worn in the movie and the 1970 release date. In short, the hair styles and skinny pants of the movie are a long pre-Vietnam way from the bell-bottoms and long hair of counter-cultural 1970. I don't know what accounts for this apparent disparity unless release was held up for several years. Anyway, except for the rather hollow sound of the dialogue dubbing, this accomplished little indie remains an underground original.