The explorers find rocks engraved with Saknussemm's initials, confirming his prior journey. Their path is blocked, so they use explosives to clear the way. The explosion causes a surge of water that propels them upward, culminating in a volcanic eruption. They emerge on the Italian island of Stromboli. Returning to Hamburg, Professor Lidenbrock gains fame, and Axel marries Gräuben.
