When the world moves so fast, mountains seem to stand still. But mountains move and change just like you… Can you imagine?

From award-winning author-illustrator Julia Kuo comes a wondrous exploration into mountains. Just imagine … Trek up, up, up, to where glaciers slide, volcanoes erupt, and meadow flowers burst into color. Discover all of the marvelous ways mountains sway and hum, wiggle and shake, and even make their own weather.

Perfect for ages 4-8, Mountainous features:

• A wide display of mountains from around the world
• Fascinating scientific facts about how mountains are made, how they support ecosystems, and can reshape landscapes (and more!)
• Dynamic sidebars and a unique search-and-find backmatter invites readers to dive back into the pages again and again

With simple lyrical text and informative sidebars, this stunning picture book is perfect for introducing readers of all ages to the mysteries of mighty mountains and the wonders of our natural world.

Book 2 in the I Am Nature series, following the award-winning Luminous.

Praise for Luminous
STARRED Kirkus Reviews
STARRED Horn Book
STARRED BookList
STARRED Publishers Weekly

An Outstanding Science Trade Book from the National Science Teachers Association
2025 Choose to Read Ohio (CTRO) booklist in the Young Children category
Arkansas Diamond Primary Award, Nominee, 2024-2025
Named a 2023 CCBC Choices Best Book of the Year
and many more!