Mystery of the Mineral Gorge — Julia Van Nutt

Everyone in Cobtown is quaking with fear. For many nights, a horrific wailing has risen from the depths of Mineral Gorge, a forbidding place on the outskirts of town. Lucky Hart knows that its twisted paths and dark shadows are said to have swallowed people up. She's even more frightened when Old Hans says it may be haunted. But Lucky's aunt, Heddy Peggler, doesn't believe such nonsense and leads a search party. Lucky joins the nighttime search, venturing down into Mineral Gorge, where the ghostly screams pull them all deeper and deeper...