Treasure on Superstition Mountain (Superstition Mountain Mysteries) / Elise Broach

Even though Henry Barker and his two brothers learned firsthand that the urban legend about danger on nearby Superstition Mountain wasn't just a myth, this doesn't stop them from planning their return. Along with their friend Delilah, the Barker brothers soon find themselves entangled in more danger and mystery as they uncover a real treasure, but the discovery comes at a very big price--they barely survive an avalanche. The question remains--is someone after them, or is the mountain seeking revenge?
Treasure on Superstition Mountain is the second book in Elise Broach's Superstition Mountain series.