When spelunking siblings Elara and Bodin join speleologist Dr. Rishi beneath the Stormpeak Mountains, they enter a world of dripping stalactites, flowstone cascades, and silent pools. Armed with headlamps, gas meters, and water-sampling kits, they study bats’ carbon-dioxide footprints, collect blind cavefish, and marvel at ancient wall paintings preserved for millennia. As rising snowmelt threatens to flood the lower galleries, they engineer rock-diversion channels, learning hands-on mapping and conservation. From troglobitic insects to gleaming quartz caverns, each twist and turn reveals science, history, and the delicate balance of subterranean life. Tales of Hidden Caves invites young readers to be guardians of Earth’s secret underground realms.