Crescent Wing Butterfly
elusive
Catch Bugs · Endgame
Catch Bugs Secret Tomb Guide
The Catch Bugs Secret Tomb is the hidden endgame area beneath Dune Burrow. To unlock the Secret Tomb you carry three specific bugs at once, walk into a rocky tunnel between the Potion Traders and the waterfall, and meet Anpu — the NPC who sells the 200,000,000 Bone Net. This Secret Tomb guide covers the three keys, the entrance route, the Anpu NPC, the Bone Net trade-off and what spawns inside.
Quick answer: To unlock the Catch Bugs Secret Tomb, carry Crescent Wing Butterfly, Wasp Moth and Spiny Harvestman at the same time, then enter the Dune Burrow tunnel between the Potion Traders and the waterfall. This is also the correct page if you searched for catch a bug secret tomb.
Catch Bugs Secret Tomb at a glance
The Secret Tomb is a hidden endgame area under Dune Burrow in Catch Bugs. Carry Crescent Wing Butterfly, Wasp Moth and Spiny Harvestman at the same time, then enter the rocky tunnel between the Potion Traders and the waterfall to unlock it. Inside you find the Anpu NPC, the Bone Net (200,000,000 cash) and exotic spawns including Undead Scorpion, Thousand Scorpion and the Secret Tomb Swarm.
The three Secret Tomb key bugs
You only unlock the Catch Bugs Secret Tomb when you carry all three of these bugs in your inventory at the same time. Each comes from a different zone and each one matters for vivarium income too — do not sell them after you finish the Secret Tomb run.
Wasp Moth
exotic
Spiny Harvestman
elusive
Catch Bugs Secret Tomb entrance — step by step
The Catch Bugs Secret Tomb tunnel itself is in Dune Burrow, but it only opens for players carrying the three Secret Tomb keys above. Follow these steps in order.
- Spawn in Dune Burrow.
- Walk toward the Potion Traders / net upgrade area.
- Head right toward the waterfall.
- Between the large rock and the waterfall, look for a small rocky tunnel / nook.
- With all three key bugs in your inventory, walk into the tunnel — the Secret Tomb opens automatically.
Sources: ProGameGuides — How to Unlock the Secret Tomb, GameSToUse — Unlock Secret Tomb
Inside the Secret Tomb — Anpu, Bone Net, Undead spawns
Once the Secret Tomb opens, the first NPC you meet is Anpu. Anpu sells the signature Catch Bugs Bone Net — 200,000,000 cash, with roughly 1,877 more luck than the Scorpion Net at the cost of strength and weight capacity. The Bone Net is built for chasing rare and elusive spawns, both inside the Secret Tomb and back in the cave biomes.
The Bone Net trade-off
Bone Net verified
If you want raw strength for big-bug captures, keep using the Scorpion Net instead. Many Catch Bugs endgame players carry both nets and swap between them depending on whether they're chasing Undead Scorpion swarms (Bone) or single high-weight catches (Scorpion).
Confirmed Secret Tomb spawns
- Undead Scorpion — Secret Tomb spawn. Strong vivarium income and quest tie-in with Anpu NPC.
- Thousand Scorpion — Secret Tomb spawn — pairs with Bone Net for endgame grinding.
- Secret Tomb Swarm — Bulk swarm event in the Secret Tomb — gather quickly with Bone Net for fast cash.
Spawns confirmed via ProGameGuides and player walkthroughs on YouTube.
Pre-Secret-Tomb checklist
- Have at least a Royal Net or higher before farming the three key bugs
- Keep the three key bugs in your inventory — do not sell them before entering
- Unlock vivarium upgrades to bank offline cash for the Bone Net (200M)
- Bring a Scorpion Net (250M) or stronger if you want to capture every Secret Tomb spawn
Common Secret Tomb mistakes
- Selling Crescent Wing Butterfly because of its high price — keep it
- Trying to enter Moon Hollow before in-game 6:30 PM and missing Crescent Wing Butterfly
- Buying the Bone Net before unlocking the tomb — Anpu only spawns inside
Catch Bugs Secret Tomb — FAQ
How do you unlock the Secret Tomb in Catch Bugs?
To unlock the Catch Bugs Secret Tomb, carry three key bugs at the same time — Crescent Wing Butterfly (Moon Hollow, after in-game 6:30 PM), Wasp Moth (Deeproot Caves, any time), and Spiny Harvestman (Dune Burrow) — then walk into the small rocky tunnel between the Potion Traders and the waterfall in Dune Burrow. With all three in your inventory, the Secret Tomb opens automatically.
What three bugs do you need to unlock the Secret Tomb in Catch Bugs?
The three Secret Tomb key bugs in Catch Bugs are: Crescent Wing Butterfly (Elusive — Moon Hollow, spawns after in-game 6:30 PM), Wasp Moth (Exotic — Deeproot Caves, any time), and Spiny Harvestman (Elusive — Dune Burrow, near burrow entrances and rocky outcrops). You must carry all three in your inventory at the same time when you walk into the Dune Burrow tunnel.
Where is the Secret Tomb entrance in Catch Bugs?
The Secret Tomb entrance is a small rocky tunnel in Dune Burrow, located between the Potion Traders / net upgrade area and the waterfall. Walk toward the large rock next to the waterfall — the tunnel is in the nook between them. You must be carrying all three key bugs (Crescent Wing Butterfly, Wasp Moth, Spiny Harvestman) for the tomb to open.
What is the Bone Net and how do you get it in Catch Bugs?
The Bone Net is the highest-luck endgame net in Catch Bugs Roblox. It costs 200,000,000 cash and is sold exclusively by Anpu — an NPC inside the Secret Tomb. The Bone Net gives roughly 1,877 more luck than the Scorpion Net, making it ideal for rare and elusive bug hunting. To reach Anpu, you must first unlock the Secret Tomb by carrying the three key bugs to the Dune Burrow tunnel.
What spawns inside the Secret Tomb in Catch Bugs?
Inside the Catch Bugs Secret Tomb you encounter the NPC Anpu (sells the Bone Net for 200M cash) and spawn pools including Undead Scorpion, Thousand Scorpion, and Secret Tomb Swarm. These are endgame bug spawns that provide strong vivarium income. Bring the Scorpion Net (250M) or Bone Net if you want to capture every spawn inside.
Secret Tomb unlock steps verified via ProGameGuides, GamesTouse and YouTube walkthroughs. Last checked 2026-05-10.
Where the Secret Tomb fits in Catch Bugs progression
The Secret Tomb sits between the mid-game cave grind and the April-2026 desert endgame. By the time you can comfortably hold three Secret Tomb keys you'll already have a Royal Net and a stocked vivarium; the Secret Tomb gives you the Bone Net, the Anpu cash sink, and a long rotation of Undead Scorpion spawns to fund later upgrades like the Scorpion Net (250,000,000) or the April-2026 Dark Matter and Nuclear nets. Not sure which to buy next? See the full best net in Catch Bugs Roblox comparison — Bone Net vs Scorpion Net stats and upgrade order.
New to Catch Bugs? Start with the beginner guide, then come back here once you have a Royal Net. Looking for the rest of the Catch Bugs world? Browse all locations or the full bug list.