A woman crouches on a rocky cliff overlooking the sea. She is examining a handful of white flowers with long, red stamen. She sticks a steel soil thermometer into the ground next to the flowers to check the temperature. From a distance, we see her walking along the horizon; her bright red windbreaker is striking against the green and gray of her island surroundings. She carefully drops a rock into a deep well, listening for the splash as it hits the water far below. Next, we see her recording her observations in a notebook. She writes the date – it’s April of 1973 – the temperature from the soil thermometer (14.3° C, or about 57° F) and the words “no change”.
Everything else that happens in Enys Men happens around this basic routine, which we see a dozen times over the course of the picture. It’s the most mundane depiction of data collection you could imagine. In contrast to that mundanity, the woman, referred to only as “The Volunteer” in the film’s closing credits, experiences either a psychological crisis or a metaphysical terror, though the movie never definitively answers which. We experience her reality in the form of existential dread.