Precursor Remnants, Hypixel SkyBlock Wiki

The Precursor Remnants is a randomly-generated location in the Crystal Hollows where Automatons will spawn, and can be killed to obtain Automaton Parts. Inside, the Lost Precursor City can spawn, where the player can obtain the Sapphire Crystal by giving Automaton Parts to Professor Robot. This text is shown when a player enters ⏣ Precursor Remnants for the first time. Mine Sapphire Gemstones. Look out for Automatons!

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Crystal Hollows/Special Locations, Hypixel SkyBlock Wiki

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