Olivia, Edmund, and the Secret of Bonnechere Caves (Paperback) (ISBN-13: 9781069497956)

When Edmund and his curious little sister Olivia take a tour of the mysterious Bonnechere Caves, they think they're in for just another field trip. But with the help of their cheerful tour guide Mark, they soon discover the thrilling story of Tom -the brave explorer who first dared to journey deep underground.

As stalactites glisten and water drips in hidden corners, the children imagine themselves in Tom's muddy boots, uncovering ancient passages and surprises. Along the way, they find wonder, courage, and even a friendly frog!