Obsidian is a rare resource in LEGO Fortnite that can be tricky to find. After reading this guide‚ you’ll know exactly how to get Obsidian in LEGO Fortnite. LEGO Fortnite: Where to find and mine Obsidian location Obsidian is found in Desert caves. Desert caves are found in… you guessed it‚ the Desert biome. Before you go to a Desert biome‚ you’ll need a way to remove the Hot and Burning temperature effects. Related: How to remove hot and cold in LEGO Fortnite Once you’re in a Desert cave‚ you’ll see lava. You’ll also see black rock. This is Obsidian. The only way to get Obsidian once you find it is to break it with a Rare Pickaxe which requires a Rare Crafting Bench‚ three Flexwood Rods‚ and three Sand Claws — those two resources are found in Deserts. Once you find Obsidian‚ I recommend you go through the whole cave farming as much Obsidian as you can until your Pickaxe breaks. Obsidian is one of those resou...