What is the climax in the story dog of pompeii?

The climax of the story "Dog of Pompeii" occurs when the volcano erupts, causing the destruction of Pompeii. The main characters, Tito and Bimbo, are separated amidst the chaos as they try to escape the disaster. The climax highlights the intense and dramatic moment when the eruption reaches its peak, leading to a tragic and climactic event.