One of the greatest -- and most obvious -- phenomena is the changing of the leaves in autumn. No two autumns give the same pattern of color: the first tree to change this autumn may be the last to change the next, and vice versa.
A second notable phenomena is the pleasant unique aroma of drying leaves and plant life on a warm, clear fall afternoon. If only I could capture that scent and sandwhich it between these two pictures.
The trees, the grass, the neighboring shrubs, the hillside, the river, every smell and color and texture --all these things-- make up a larger framework --the landscape-- in the clockwork of seasonal change.