Treasure on Superstition Mountain by 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?