Reindeer moss (Cladonia rangiferina), a lichen native to countries in the northern latitudes including Iceland, is woven into a wire mesh and mounted on the wall of a gallery. As the lichen dries, it shrinks and fades; when the installation is watered, the moss expands, changes colour again, and fills the space with its fragrance.
Olafur Eliasson, Moss wall, 1994; Installation view: Leeum Museum, Seoul, 2016; Video: SHIMURAbros; Tate Collection, London UK; © 1994 Olafur Eliasson