underground areas

"It was supposed to just be a normal basement--some storage boxes, dust, you know, the usual basement stuff. But when Milo is sent by his mother to fetch a sock from the basement of the historic home they've moved into, Milo finds a door in the back that he's never seen before. Turns out that the basement of his house is enormous. In fact, there is a whole world down there. As Milo travels ever deeper into the Basement World, he meets the many Things that live in the shadows and gloom . . . and he learns that to face his fears he must approach even the strangest creatures with kindness"--Provided by publisher.

Accidentally transported to the Shinto underworld called Yomi, Anzu discovers the queen of this realm has been kidnapping the spirits of lost children for decades and is torn between escaping or staying to help the trapped spirits as she fights her way back home.

Buried deep beneath the outskirts of the city, the London catacombs are known for being as beautiful as they are eerie. Although they are no longer in use today, these tunnels document an important part of the city's history. Discover the London catacombs, including who was laid to rest there, why they closed, and more.

"What kinds of animals live under the ground? Readers discover the answer to this question as they learn fun facts about the animal world while having lots of fun along the way . . . Readers are then able to interact with these creatures by following directions to shake, touch, and turn the pages before learning something new"--Provided by publisher.

"A . . . look at subterranean city spaces, this book takes readers on a tour through vaults, tunnels, shopping malls, and pathways built throughout the world. Cutaway illustrations and maps help readers understand how cities were built from the underground up"--Publisher.

Pat O'Toole, his brother Coop, and their new companion, Kate, have narrowly escaped the cultlike community below New York City but must try to stop the cult's leader, Kate's grandfather.

Teenager Eliza and her friends are going to explore a cave near their upstate New York home, but first her friends insist on dragging her to Drowner's Swamp, a bog legendary for its dangerous sinkholes, and a place which her mother has frequently warned her about; Eliza does not want to go, and when the earth opens up and swallows her she finds herself in a system of caves--and what she finds living there is strange and dangerous beyond anything the legends could conjure up.

A completely implausible earthquake sets Frederik Sandwich and Pernille, a mysterious stranger, on an adventure through secret and forbidden places in their small town.

A completely implausible earthquake sets Frederik Sandwich and Pernille, a mysterious stranger, on an adventure through secret and forbidden places in their small town.

Fourteen-year-olds Ananka Fishbein, Kiki Strike, and the other Irregulars encounter a Chinese mummy, a ghost, trained squirrels, and old enemies as they try to stop an art forgery ring and safeguard the secret streets hidden beneath New York City.