How to Unlock Lighthouse Trap Door Prospecting & All The Item Location!

The Prospecting lighthouse hides a secret chamber full of rare tools and loot. To get inside, you need to solve a simple puzzle: collect a Volcanic Key, plus three special items (Flare Bloom, Uranium, Cat’s Eye) and place them on the matching plates.

This guide shows you exactly where to find each item and how to unlock the trap door step by step. Also check out our Prospecting Codes and Beginner Guide for new players!

Requirements You Need to Get  to Open Lighthouse

Before heading to the lighthouse, make sure you have:

• Volcanic Key (single-use)
• Flare Bloom
• Uranium
• Cat’s Eye

You’ll also need a reliable shovel (higher dig speed and strength help) and, if possible, any gear or pets that boost your luck.

1. Getting the Volcanic Key

1. Fast-travel to the Magma Furnace region.
2. Equip your best shovel and locate the dark soil patch beside the central lava flow.
3. Dig repeatedly in that spot. Each attempt has a small chance to drop the key.
4. When it appears, pick it up and store it in your inventory under “Special Keys.”

2. Finding Flare Bloom

• Location: Around lava vents and hot springs in the Magma Furnace area.
• Tip: Look for bright red flowers growing near streams of molten rock.
• Method: Use a watering can or sprinkler to boost growth rate if you’ve unlocked those tools.

3. Finding Uranium

• Location: Scattered among radioactive rock formations in the Furnace and Crater biomes.
• Tip: Rocks with a greenish glow often contain Uranium.
• Method: Mine or dig each glowing rock; Uranium has a moderate drop rate.

4. Finding Cat’s Eye

• Location: In rocky outcrops on high elevations or cliff edges in Windswept Beach and nearby hills.
• Tip: Search along ridges and steep slopes—Cat’s Eye spawns in small clusters.
• Method: Harvest with your shovel; you may need to clear several rocks to get a single Cat’s Eye.

5. Unlocking the Lighthouse Trap Door

Fast-travel to the Lighthouse waypoint. Approach the trap door at its base and use the Volcanic Key to open it. Enter the dark chamber and place each item on its matching stone plate:

• Uranium on the left plate
• Cat’s Eye on the right plate
• Flare Bloom on the central plate

Once all three are placed, the hidden door will open.

With the trap door unlocked, you can now explore the secret maze beneath the lighthouse and claim the fossilized tools and other rewards. Keep this guide handy on your journey: gather your key, track down each ingredient in its zone, and place them on the plates. Happy Prospecting!