Here's a breakdown of the key aspects of the setting:
* Underland: This is a hidden world beneath the surface of New York City, accessible through a series of tunnels and secret passages. It is a vast and complex world with its own unique ecosystems, cultures, and civilizations.
* Different Regions: Underland is not a uniform environment. It includes various regions, each with its own distinct climate, inhabitants, and challenges. Examples include the "Dark Forest" and "The Dust" regions, which are described in detail in the book.
* Creatures and Cultures: Underland is populated by a diverse range of creatures, from the tiny "Gliders" to the giant "Warmbloods." Each species has its own unique characteristics, culture, and way of life. Some are friendly and helpful to Gregor, while others pose significant threats.
* Magic and Technology: Underland has its own magical system, which plays a significant role in the story. The "Warmbloods," for instance, use a unique magic system based on blood. There is also evidence of an advanced technological society in Underland, though the exact nature of it is not fully explored in the first book.
The setting of Underland is integral to the story, providing both challenges and opportunities for Gregor and his companions. It is a world that is both dangerous and fascinating, and it plays a key role in shaping the characters and their adventures.