Naturalist and author Raymond Wiggers relates the fascinating origins of our state's forests, prairies, peatlands, and savannas. In this presentation, Mr. Wiggers -- noted educator, speaker, and tour guide -- shows how Illinois' diverse array of plant species, habitats, and scenic locales is the product of varying soils and landscape features created by vast geologic forces operating over millions of years. Of special significance for conservationists, local historians, educators, and planners, this program is for those who seek an understanding of the links between human society and geology.