The Volcanic Geode is described as an item that 'encloses a magma crystal core, preserving its contents with an amber-like quality. Inside this geode, you may find a trove of rare or extinct treasures – it's like a volcanic Christmas!' This is quite confusing and doesn't tell you much, so to help you out, here's a guide on where to find the Volcanic Geode in Fisch and how to use it.

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As the name suggests, the Volcanic Geode can be obtained in Roslit Volcano. Roslit Bay is one of the largest islands on the map and is home to several NPCs, including the Orc. Additionally, you can find Roslit Pond and Hamlet next to the Volcano, but for the Geode in particular, you'll need to head to the Volcano.

When you reach the location, you can fish for various Volcanic fish (make sure you have the Magma Rod) and rare materials such as Volcanic Geodes. In the same place, you can find Basalt, Magma Tang, Ember Perch, Ember Snapper, as well as rare fish such as Pyrogrub, a Legendary fish called Obsidian Salmon, and a Mythical fish called Obsidian Swordfish.