1960s couple decides to investigate a mysterious cave

Campy, 1960s sci-fi movie. The 1960s couple hides behind some boulders in the mountains. They whisper that they need to stay hidden.

Women walk silently into and out of the opening of a cave in a mountain. The women wear vintage, modest, 1960s gold sports bras and running briefs.

The 1960s couple says that they should investigate the cave but need to be cautious and stay in the shadows.

(Veo 3.1 Fast—YT Create)