What to read after Raven's Exile?

More than a century after John Wesley Powelllaunched his boat on the Green River, Ellen Meloy spent eight years of seasonal floats through Utah's Desolation Canyon with her husband, a federal river ranger. She came to know the history and natural history of this place well enough to call it home, and has recorded her observations in a book that is as wide-ranging as the river and as wild as the wilderness through which it runs.