Having escaped to the Unknown Regions, Lina and the others seek help from the village people of Sparks.

In Underland, Macfarland delivers his masterpiece: an epic exploration of the Earth's underworlds as they exist in myth, literature, memory, and the land itself. He takes us on an extraordinary journey into our relationship with darkness, burial, and what lies beneath the surface of both place and mind. Traveling through "deep time" - the dizzying expanses of geologic time that stretch away from the present - he moves from the birth of the universe...

Return to the fun and fantastic underground world of Fraggle Rock, where children and adults alike can leave their worries for another day. This season three set features all 24 episodes, as well as interviews with the groundbreaking creators and masterful puppeteers.

For centuries, the residents of the underground City of Ember have flourished in an amazing world of glittering lights and quiet contentment. But when the City's massive power generator begins to fail, the streetlamps fade - along with the hopes of the townspeople. Now it will be up to two courageous teenagers to follow a trail of clues left by the ancient builders to find the way out of Ember before their world is plunged into complete darkness.

Every city has its secrets, but who could imagine how many linger below ground, sometimes for thousands of years? Secret passageways, combat tunnels, buried palaces, Mafia escape routes and ammunition depots are just a few of the subterranean surprises you'll discover. These buried secrets are explored using state-of-the-art surveillance equipment to help investigate places oftern known only to archeologists and local residents.

The Boxtrolls, these box-wearing, quirky, mischievous creatures have lovingly raised an orphaned human boy named Eggs in the amazing cavernous home they've built beneath the streets of Cheesebridge. When the town's villain, Archibald Snatcher, comes up with a plot to get rid of the Boxtrolls, Eggs decides to venture above ground, 'into the light,' where he meets and teams up with fabulously feisty Winnie. Together, they devise a daring plan to save...

Subterranea is where the world's remaining mysteries are yet to be found. For millennia, across nations and cultures, it has been a hotbed of fantastical stories. It's where humans have kept their most sacred treasures and their darkest secrets. It's where we have found evidence of our past and may, at some point, find an escape route for our uncertain future. But what would we find there today? From the underground cities of Cappadocia to smuggling...

Four generations ago, the Earth was rendered uninhabitable and those who remained were forced underground. In Compound Eleven, the hierarachy of floors is everything and on Eve Hamilton's floor, they fight. When she meets a boy from the top floor, Eve is no longer content to just survive, she is ready to fight for freedom.

A man-beast living under the streets of New York City saves and befriends a wealthy and shallow attorney after she is beaten and left for dead. From the moment these two cross paths, they share a strong psychic bond, and though they live in separate worlds, their love continues to grow without measure.