Here's why this scene marks the climax:
* High Stakes: The fate of Camp Half-Blood, and potentially the entire demigod world, hangs in the balance.
* Confrontation with the Antagonist: Percy finally faces Kronos in his true form, not as a puppet master, but as the powerful Titan himself.
* Action and Tension: The battle is intense and dramatic, with Percy utilizing his powers and relying on his friends' help to overcome the seemingly unbeatable Kronos.
* Turning Point: This is the moment where the heroes must either succeed or face the consequences of their failure. Percy's victory over Kronos, even in a temporary sense, shifts the balance of power and sets the stage for the next adventure.
It's important to note that while this is the climax, the story doesn't end here. The battle against Kronos is just one step in the larger quest to reclaim the Golden Fleece and ultimately defeat the Titan Lord.