This extremely ascetic, so-boring-it-becomes-fascinating documentary marries mega long takes (sometimes featuring odd visual textures) of animals and the natural world, shot in Grand Teton National Park, Wyoming, USA, with occasional interjections from philosopher David Abram and, less frequently, the film-makers themselves. To enjoy it requires astringent devotion to the rigours of arthouse documentary, and an open mind to sometimes batty concepts. Almost certainly it’s best seen in a proper cinema where having paid money for admission you would feel an obligation to really pay attention or at least just stay awake.

Author of a book called The Spell of the Sensuous: Perception and Language in a More-Than-Human World, Abram obviously has a lively, original mind. He’s interested in how the physical act of speech has a sensuous dimension, and this is echoed in the film’s preoccupation with sound, both of human beings and the creatures all around in the woodland shown. These subtle, intricately constructed concepts are perhaps a trifle too complex to absorb through a medium like cinema, but you get the idea after a while; in any event, there’s something soothing about the many shots of trees swaying in the wind, gurgling water and, at one point, an aerial shot of the landscape from atop an actual bird.

Most of the cinematography is in hyper-sharp high definition that turns a close-up of a snail into a psychedelic experience, but elsewhere there are interludes when lower resolutions or other techniques create different trippy effects. It all calls back in a way to co-director Peter Mettler’s earlier work, the experimentalist film Gambling, Gods and LSD, which also pushed the boundaries of sound and vision in a documentary format. Co-director Emma Davie, with more personal and poetic offerings, is no less rewarding and thoughtful. Plus, she has a lovely voice with a soft Scottish accent. If that sort of thing, alongside shots of moose and birch trees, gets you excited, this is the film for you.