The tetrahedron is a pyramid comprised of four equilateral triangles. Plato associated the tetrahedron with the element of fire, because it was the least volumetric of the five forms, and therefore metaphorically associated with the property of dryness. The sharpness of its angles also related to the intense heat of fire.
Fire is an agent of rebirth in forests, and this site was chosen for its symbolic relationship to the concept of renewal. The tetrahedron here is placed in proximity to a dense crop of young balsam fir seedlings with a large standing dead fir tree nearby, which provides food and shelter for many forest organisms. This site suggests ecological renewal through biological means rather than by fire, of which there is no evidence in this wet climate.
Photo by Thombs Photography