This 18th Journey by Tony Foster examines selected sites along the 730-mile Green River, from its headwaters in the Wind River Mountains of Wyoming to its confluence with the Colorado River in Utah. The catalogue includes color images of every artwork, extracts from Foster's diary, travel photos, as well as select essays and other information which we hope illuminate the Green River's geologic history, the relationship that many have had and currently have with the river, and how that history impacts the river today.