This informative source book answers these and many other questions, revealing the wealth of knowledge held by Providence's premier explorers: the Horizon Striders. Learn the secrets of the Striders, and become an elite explorer by surviving the many dangers that inhabit Providence's hazardous terrain. Follow the teachings of a mentor on the year-long path of apprenticeship, and inherit the privilege of wearing the legendary Year Rings. Finally, this source book is an essential tool for sparking a campaign within Providence, providing players and game masters with many enticing exploration ideas. This is the vital source book for anyone interested in exploring the mysteries of Providence.