Sure it's not great, but a measly 2,7?

Just recently watched this version: https://www.youtube.com/watch?v=UUAx5C0CO7A

The acting is bad, and the dubbing detracts from it, but I honestly feel that for a low budget 1968 film the setting was exceptionally well done. It gives a much better 'different planet' vibe than some modern films do.

Where was this filmed anyway?