At what depth are spider cave biomes located in Terraria?

I have spent more than a dozen hours exploring my large world in Terraria (version 1.4.2.2 / Classic difficulty) and still haven't found a spider cavern so as to rescue the Stylist NPC. Knowing what depth or layer (underground or cavern) the spider cavern biome spawns in would help me narrow my search.

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At what depth are spider cave biomes located in Terraria? - Close-Up Photo of Spider

Where do you find a spider cave in Terraria?

Spider Caves, also known as Spider Caverns, are mini-biomes located in the Cavern layer. They feature distinct black Background walls and there are numerous Cobwebs filling the area.

What is the easiest way to find spider caves in Terraria?

This layer consists of the bottom 300-odd feet of the map, below the Cavern layer. Its backdrop is open space with magma pools and pillars. The Underworld is its own biome and does not contain other biomes within it. Lava is abundant here.

How far down is the Cavern layer?

Key Takeaways

Locate the areas where you have seen spiderlings or webbing to find nests. These are outdoors around the exterior of your home or in quiet, secluded areas of the home.

Apply Web Out spray to kill spiders and use the Cobb Webb Duster to wipe away and discard spider webs and spider eggs.

Terraria 1.3 How To Find A Spider Nest!

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Images: Глеб Коровко, Egor Kamelev, Michael Willinger, Michael Willinger