Fireworm Island

Fireworm Island was the nesting ground and home of the Fireworm and their Queen.

History
At some point, this island was discovered and explored by Bork the Bold, when he was studying the Fireworms, giving them the name the "Flame Eaters".

When Snotlout Jorgenson's dragon Hookfang lost his ability to flame on, he was then taken to the island for a cure. There, Hiccup, Toothless, and Snotlout went inside the island's cave. There they saw a hive of Firecombs which had gel that gave the fireworms their heat. Snotlout attempted to take one of the fire-combs but was confronted by the Fireworm queen.