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The World Underground
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13 October 2026

Discover the world beneath your feet ...
This book journeys from Earth’s core to the pipes and tunnels rumbling beneath us. Meet the amazing animals that carve out lives below our planet’s surface – from burrowing owls and moles to gopher tortoises and wombats – and learn about the incredible relationship between tree roots and fungi. Explore underground houses and remote caves, and uncover buried cities and mysterious catacombs.
This engaging, entertaining, and educational children’s book explains how things work under the ground, from the wildlife you didn’t even know was there to the science of soil. Discover fun facts about the history of ancient humans, caves, archaeological digs, and the myths and legends that have built up around them.
Written by award-winning author Ben Lerwill and brought to life by Paula Bossio’s beautifully quirky illustrations, The World Underground takes readers on an evocative and fact-filled journey through our hidden, underground planet.
Also available in the series:
9781837251087 The World at Night
Praise for the series:
"With playful illustrations and a wealth of facts on topics ranging from the Northern Lights to light pollution, Lerwill and Bossio’s collaboration is compelling and easy to become absorbed in… It's a book to return to, with more to discover each time." - School Library Journal (starred review)“The World at Night is an enthralling guide that provides an expansive overview of what happens while (most) humans sleep, described through digestible passages and captivating illustrations… Every page brims with whimsical art… striking.” - Shelf Awareness, Best Books of the Week
Paula Bossio is a Colombian artist and illustrator. Her work has received many awards in Japan, Korea, India, Italy, Mexico, and Colombia. Paula loves to create whimsical and profound stories told through charming characters, vibrant colors, and mixed media techniques. She is the illustrator of Where in the World?, Search Through Time, and The Wild Life of Animals.
INTRODUCTION
DEEP UNDERGROUND
- Layers of Earth
- Tectonic Plates
- Volcanoes
- Earthquakes
- Rock Types
- Groundwater
- Caves
DIGGING DOWN
- Incredible Soil
- Life in the Soil
- Earthworms
- Tree Roots and Mycelium
- Crops, Plants, and Food
ANIMALS UNDERGROUND
- Tunnels, Holes, Dens, and Burrows
- Underground Adaptations
- Aardvarks
- Hibernation and Torpor
- Eggs, Nests, and Babies
- Gopher Tortoises
- Woodlands and Forests
- Deserts and Caves
- Prehistoric Fossils
- Cleveland-Lloyd Dinosaur Quarry
HUMAN HISTORY UNDERGROUND
- Underworld Myths and Beliefs
- Early Humans and Caves
- Archeological Digs
- The Terracotta Army
- Time Capsules and Buried Treasure
- Underground Cities
UNDER OUR FEET
- Pipes, Cables, and Wires
- Tunnels and Trains
- The Channel Tunnel
- Mines and Mining
- Wells and Boreholes
- Underground Buildings
- Underground Houses
COMING UP TO THE SURFACE
GLOSSARY
INDEX
ABOUT BEN AND PAULA