Russell continues his initial impulse for the series, the exploration of "naturally-derived psychedelia," with this cadenced phantasmagoria of negative imagery and negative space. The tendrils of sharp white trees become osseous arteries against the black void of the sky. The spiraling spine of a massive tree collides against a spanning pan of a branch twined into two through a mirroring effect. Representation morphs into abstraction as the film becomes a study in density and fearful symmetry in the forest of sight. By film's end, the arboreal is left far behind as the film strip becomes an engulfing, vertiginous maw.