The Lava Proof Hook in Ultima Online is a specialized fishing tool used to fish in lava, offering an alternative to the traditional lava fishing pole. This hook is obtained as a reward from Professional Fisher Quests and requires the High Seas booster pack to be used. When attached to a fishing pole, the Lava Proof Hook enables the player to fish in lava areas, with the condition and number of uses of the hook indicated on the fishing pole. The hook allows for 50 uses before it wears out and transforms back to a regular fishing pole. Common fishing spots for using this hook include the Stygian Abyss Dungeon and Mount Sho. Items that can be fished up with the Lava Proof Hook include stone footwear, cracked lava rocks, and occasionally, rare lava-infused weapons