Deep in Southern Mexico's jungle, the Villa Luz limestone caves support an ecosystem that thrives in a highly poisonous, acidic environment. This rare type of cave is found in few spots on Earth. The Villa Luz, is known for the bacteria in its thermal sulphur springs that produce hydrogen sulfide gas. When the gases form bonds with oxygen, the result is sulfuric acid. The acid eats away at the cave walls, constantly altering the patterns in the cretaceous...

"Simple text and full-color photography introduce beginning readers to caves."

When Amy Larson and her partner Hunter Forrest investigate a missing persons case in a series of caves outside Denver, Colorado, they discover a muddy pit littered with corpses that are covered in human bite marks and find the case leading them to a cult.

After fourteen-year-old Andy slips away from his kayaking group to visit the wilderness site of his archaeologist father's death, a storm strands him on Admiralty Island, Alaska, where he manages to survive, encounters unexpected animal and human inhabitants, and looks for traces of the earliest prehistoric immigrants to America.

"In a very deep cave in Mexico, massive crystals grow much larger than a human. Cave of Crystals looks at when and how these crystals formed and what the future looks like for these formations."--Amazon.com.

"Estranged friends Dean and Bethan meet after five years apart when they are drawn to a network of caves on a remote Arctic island. Bethan and her friends are environmental activists, determined to protect the land. But Dean's group's exploitation of rare earth minerals deep in the caves unleashes an horrific contagion that has rested frozen and undisturbed for many millennia. Fleeing the terrors emerging from the caves, Dean and Bethan and their...

After Mallory is kidnapped at her fencing meet, Jared and Simon search for her near an old quarry and find themselves amidst dwarves and goblins.

Text and labeled illustrations describe the formation and physical features of various kinds of caves, with a brief section on spelunking.

Four teen girls diving in a ruined underwater city quickly find themselves in a watery hell as their fun outing turns into heart-stopping fear when they learn they are not alone in the submerged caves. As they swim deeper into the claustrophobic labyrinth of caves they enter the territory of the deadliest shark species in the ocean.