Here's why it's considered the climax:
* High Stakes: The Fury is the most dangerous creature in the Underland, and the fate of the entire human colony rests on Gregor and his friends' success in defeating it.
* Turning Point: The fight with the Fury represents the ultimate test of Gregor's courage and leadership. It marks a pivotal moment in his journey, forcing him to confront his fears and utilize the skills he has acquired.
* Shifting Dynamics: The battle with the Fury also impacts the dynamics within Gregor's group. It reveals hidden strengths and weaknesses in each character, leading to a deeper understanding of their relationships.
While the story continues after this climactic confrontation, this is where the primary conflict of the book reaches its peak. It's the moment where Gregor's destiny is truly decided, and the future of the Underland is at stake.