The Hill of Dreams by Arthur Machen, 1907.Arthur Machen (1863 - 1947) was a Welsh author and mystic of the 1890s and early 20th century.He is best known for his influential supernatural, fantasy, and horror fiction.His novella The Great God Pan (1894) has garnered a reputation as a classic of horror(Stephen King has called it "Maybe the best [horror story] in the English language").