奥尔达洞穴是在水蚀作用下自然形成的一条长达3英里的岩溶隧道，它是世界上最长的水下石膏晶体洞，坐落在俄罗斯乌拉尔地区。影片运用4K摄像机进行拍摄，呈现出3亿年来大自然造就的神奇景观。

A young American boy spends his summer in Ireland and solves the mystery that captivates the entire village. Driven by curiosity and his own search for meaning in life, he faces his fears and discovers the Secret of the Cave.

When Andres and his partner are hired to recover some valuables from an airplane that went down in the Bermuda Triangle, they face not only human treachery but also the mysterious powers of an underwater civilization.

Living by the mantra 'it's easier to raise boys than to repair broken men', martial arts sensei Jason Wilson tenderly guides his often-troubled young Detroit students with a beautifully effective blend of compassion and tough love.

A young woman stumbles across a cave that is populated by the spirits and skeletons of people who died there under mysterious circumstances.

Scientists attempt to learn more about several species of sharks in the South Pacific.

Psychological thriller. Geography teacher smuggles a case of heroin for a friend.

Munks and Lemijs accidentally find a cave and go to explore it, but it turns out that the cave holds hidden treasures and the path to them is full of dangerous obstacles.

Carried by a rich narration from Orson Welles, this rarely seen 1973 animated adaptation of Plato’s 'allegory of the cave' populates the tale with haunting human figures, bringing retro-surreal life to the parable.

A drama with touches of suspense, where a mother and daughter get lost in a cave.