On march 9, 1862 the battle between ironclads and was a dramatic turning point in the war at sea.

On March 9, 1862 the battle between ironclads Monitor and Virginia was a dramatic turning point in the war at sea.

This Civil War battle was imperative to world history because it was the first time that two ironclad warships faced off against each other. This signaled the end of the wooden warship and change naval military history forever.

I'm pretty sure that's called a volcano