Ziggy and the rest of the Black Dinosaurs are thrilled to find out that there is a tunnel under their school that was once used by the Underground Railroad, and

When Ziggy gets the word that the trip to Camp Caesar is on, he can't wait to tell his friends, the Black Dinosaurs. But the four pals couldn't know what excite

Four boys who call themselves the Black Dinosaurs dig up a mysterious box of bones in this first book of the classic chapter book series by award-winning author

The New York Times Bestseller! The story of an outcast boy, his eccentric dad, and the scary underground world they discover through secret TUNNELS.14-year-old

Do you think it's possible to be one place one minute, and then a completely different place the next? I'm talking a REALLY different place. My name is Gracie H