Learn how to get the Dinosaur Skull in Prospecting Roblox, unlock Caldera Island, farm Infernal Heart, and craft the Fossilized Crown.

The Dinosaur Skull is one of the rarest and most valuable minerals in Prospecting. Selling for $50,000,000 per kg and used to craft the powerful Fossilized Crown, this Exotic-tier item is a true endgame goal. Unlike common minerals, the Dinosaur Skull can only be found in the Infernal Heart, a timed digsite inside the volcano on Caldera Island. To improve your chances, you’ll need high Luck stats, the right shovel, and patience.
In this guide, we will tell you exactly how to unlock Caldera Island, access the Infernal Heart, and maximize your odds of digging up the Dinosaur Skull.
Unlock Caldera Island in Prospecting

To begin, you must unlock Volcano Island (Caldera Island).
- Complete the lighthouse repair quest by collecting a Luminum.
- Deliver the Luminum to finish repairs and gain access to the island.
Reach the Infernal Heart Digsite
- Location: Inside the volcano, past the Magma Furnace.
- Timed Access: Opens at the 15th minute of every hour (e.g., 10:15, 11:15) and stays open for 30 minutes.
- Requirement: A shovel with at least Toughness 5, such as the Divine Shovel.
Read More: How To Get to Caldera Island in Prospecting: Lighthouse Quest
Boost Your Luck

Since the Dinosaur Skull is Exotic rarity, Luck is the most important stat. Stack as many bonuses as possible to boost your luck:
- Gear: Equip necklaces and rings that increase Luck.
- Fossilized Pan: Grants the best Luck bonus.
- Potions: Buy Luck Potions from potion shacks or the Alchemist.
- Totems: Place Luck Totems near the Infernal Heart entrance.
- Meteor Showers: Trigger or wait for the event to gain 2x Luck.
- Codes: Redeem active codes for temporary Luck boosts.
Dig for the Dinosaur Skull
Once inside the Infernal Heart, dig with your Toughness 5+ shovel. The Dinosaur Skull is very rare, so multiple attempts may be required. Always dig while all your Luck boosts are active to improve your chances.
Dinosaur Skull sells for $50,000,000 per kg, making it the most valuable mineral in the game. You can combine it with Cinnebar, Dragon Bone, and a Volcanic Core at the Blacksmith’s anvil to create the Fossilized Crown, which provides huge boosts in Luck, Capacity, Shake Speed, Size, and Sell Rate.
Also read: How To Craft Fossilized Crown in Prospecting
Tips for Success
- Save Luck potions and Meteor Shower events for Infernal Heart runs.
- Time your entry so you don’t waste the 30-minute window.
- Expect long grinds; many players spend days farming before finding one.
Getting the Dinosaur Skull in Prospecting takes patience, preparation, and maxed-out Luck. With the right gear and timing, you’ll eventually add this Exotic treasure to your collection and craft the legendary Fossilized Crown.
FAQs
How Rare Is the Dinosaur Skull in Prospecting?
The Dinosaur Skull is Exotic rarity, making it one of the rarest minerals in the game.
What Shovel Do I Need To Dig the Dinosaur Skull?
You need a shovel with at least Toughness 5, like the Divine Shovel.
Where Is the Infernal Heart in Prospecting?
The Infernal Heart is a dig site inside the volcano on Caldera Island, past the Magma Furnace.
What Can I Craft With the Dinosaur Skull?
You can craft the Fossilized Crown, which boosts multiple stats.
Check out the latest Prospecting Codes.

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