How to Unlock the Secret Tomb in Catch Bugs (June 2026) All 3 Bug Locations

If you have been wandering around Duneburrow in Catch Bugs on Roblox, you have probably noticed a mysterious stone wall covered in rune symbols. That is the entrance to the Secret Tomb, one of the most rewarding hidden areas in the entire game. I spent hours tracking down exactly what you need to open it, and the process comes down to collecting three specific bugs scattered across different areas of the map.

In this guide, I will walk you through every step of how to unlock the Secret Tomb in Catch Bugs, including the exact spawn locations for all three required bugs. Whether you are a new player or have been bug hunting for weeks, this walkthrough covers everything you need to know. If you enjoy other Roblox catching games, the mechanics here should feel familiar.

Where Is the Secret Tomb in Catch Bugs?

The Secret Tomb is hidden deep within the Duneburrow region of Catch Bugs. To find the entrance, head to the area between the Cell Area and the Net Area. Look for a narrow tunnel carved into the rock wall. It is surprisingly easy to miss if you are not looking for it. The entrance blends into the surrounding stone, so move slowly and keep your camera angled toward the walls.

Once you enter the tunnel, you will reach a dead end with a large stone wall covered in three glowing rune symbols. This is the rune wall that blocks access to the Secret Tomb. Each rune corresponds to one of the three bugs you need to collect. The wall does not open from interaction alone. It reacts to your inventory. When you approach the wall with all three required bugs in your collection, the runes will activate and the wall will slide open automatically.

The tunnel entrance itself does not move or change locations, so once you have found it once, you can return anytime. Just remember that the rune wall will only respond when you actually have the bugs on you. I made the mistake of checking the wall before catching all three bugs and thought it was bugged. It was not. I just did not have the right bugs yet.

How the Rune Wall Works in Catch Bugs?

The rune wall puzzle in Duneburrow uses a straightforward inventory-check system. There are three runes on the wall, and each one lights up when it detects a specific bug in your inventory. You do not need to place the bugs anywhere or interact with the wall manually. Simply walking up to it with all three bugs triggers the opening sequence.

The three bugs required to unlock the Secret Tomb are:

• Crescent Wing Butterfly
• Spiny Harvestman
• Wasp Moth

Each bug is found in a different area of the map, which means you will need to do some exploring before you can unlock the tomb. The game does not tell you which bugs correspond to which runes, which is why many players get stuck at this point. There is also no penalty for attempting the wall with incomplete bugs. You can walk up to it as many times as you want until all three runes activate.

One important detail that many guides skip: the bugs must be currently in your active inventory. If you have already donated them to the Critterpedia or placed them in storage, the rune wall will not recognize them. I learned this the hard way after catching a Crescent Wing Butterfly and immediately donating it. Had to go catch another one.

Bug 1: Crescent Wing Butterfly (Moon Hollow)

The Crescent Wing Butterfly is the first bug you will want to track down. It spawns exclusively in the Moon Hollow area, a location known for its nighttime atmosphere and rare bug appearances. Moon Hollow is relatively easy to find on the map. It sits on the western side of the main world, identifiable by its dark blue sky and glowing flora.

This butterfly tends to spawn near the larger trees and around the glowing mushroom clusters. It moves in a slow, predictable pattern, making it one of the easier required bugs to catch. You should not need any special net equipment for this one. A standard net will work fine. Just approach slowly and time your swing when it hovers in place. The Crescent Wing Butterfly does not spook easily, so you have multiple attempts if you miss on the first try.

Bug 2: Spiny Harvestman (Cave)

The Spiny Harvestman is widely considered the hardest of the three bugs to catch. It spawns deep inside the Cave system, which is located in the northern section of the map. The Cave is dark, has narrow passages, and the Spiny Harvestman moves quickly when disturbed. Multiple players on Reddit and YouTube have called this out as the biggest roadblock to unlocking the Secret Tomb.

Here are a few tips that helped me catch it:

• Bring your best available net. A higher-tier net gives you a larger catch radius, which matters in the tight cave corridors.
• Move slowly through the cave. Running will scare the Spiny Harvestman before you even see it.
• Listen for a distinct clicking sound it makes. That audio cue is often your first warning that one has spawned nearby.
• It tends to spawn near the deeper sections of the cave, so do not waste time near the entrance.
• If you scare it off, leave the cave and come back. It respawns after a short cooldown.

Patience is key here. The Spiny Harvestman took me about four attempts to finally catch. The cave environment makes the encounter significantly harder than the other two bug hunts.

Bug 3: Wasp Moth (Open Forest Areas)

The Wasp Moth is the third and final bug you need. It spawns in the open forest areas scattered across the map. Unlike the Crescent Wing Butterfly which stays in one zone, the Wasp Moth can appear in multiple forest locations. I had the most success finding it in the forest patches near the eastern edge of the map, close to where the terrain transitions into the Duneburrow desert region.

The Wasp Moth has a distinctive yellow-and-black pattern that makes it stand out against the green foliage. It moves faster than the Crescent Wing Butterfly but is more predictable than the Spiny Harvestman. You can catch it with a standard net, though a mid-tier or better net gives you a bit more breathing room on your timing. It tends to spawn during the in-game evening hours, so if you are having trouble finding one, try adjusting your play time to match the dusk cycle in-game.

How to Unlock the Secret Tomb in Catch Bugs: Step-by-Step Process

Here is the complete walkthrough from start to finish. Follow these steps in order and you will have the Secret Tomb open in no time.

Step 1: Head to Duneburrow. Open your map and travel to the Duneburrow region. This is the desert area on the map.

Step 2: Find the tunnel entrance. Navigate to the area between the Cell Area and the Net Area. Look along the rock walls for a narrow tunnel opening. Walk inside to reach the rune wall.

Step 3: Catch the Crescent Wing Butterfly. Travel to Moon Hollow on the western side of the map. Look near large trees and glowing mushrooms. Use a standard net and approach slowly.

Step 4: Catch the Spiny Harvestman. Travel to the Cave in the northern section. Bring your best net. Move slowly through the deeper sections of the cave and listen for the clicking sound. Be patient and do not rush.

Step 5: Catch the Wasp Moth. Head to the open forest areas, particularly on the eastern side of the map near the Duneburrow border. Look for the yellow-and-black moth during evening hours.

Step 6: Return to the rune wall. Make sure all three bugs are in your active inventory. Travel back to the tunnel in Duneburrow and walk up to the rune wall. If all three bugs are present, the runes will light up and the wall will open.

Step 7: Enter the Secret Tomb. Walk through the opened wall and explore the Secret Tomb. Inside, you will find high-tier bug spawns that are not available anywhere else in the game. These rare bugs can significantly boost your collection and earnings.

For more tips on Roblox catching games, check out our other guides. The mechanics across these games share a lot of similarities, so strategies often transfer between titles.

Tips and Common Mistakes to Avoid

After going through this process multiple times and reading through dozens of player reports on Reddit and YouTube, here are the most common mistakes and how to avoid them:

Do not sell the required bugs. This is the number one mistake players make. If you sell the Crescent Wing Butterfly, Spiny Harvestman, or Wasp Moth before visiting the rune wall, you will have to catch them again. The game gives no warning that these bugs are needed for the Secret Tomb.

Keep bugs in active inventory. Donated bugs or bugs placed in storage do not count toward the rune wall check. All three must be in your active inventory when you approach the wall.

Upgrade your net before the cave. The Spiny Harvestman is significantly easier to catch with a higher-tier net. If you are struggling, spend some time upgrading your net equipment before heading into the cave.

Speedrun tip: The fastest route is to catch the Wasp Moth first since the forest is close to Duneburrow, then grab the Crescent Wing Butterfly from Moon Hollow, and save the Spiny Harvestman for last since it is the most time-consuming. This route minimizes backtracking.

Bug respawns. If you scare off a bug, it will respawn after a short cooldown. You do not need to restart your game or wait for a server reset. Just leave the immediate area and come back after a minute or two.

Frequently Asked Questions

Final Thoughts on the Catch Bugs Secret Tomb

Unlocking the Secret Tomb in Catch Bugs is one of the most satisfying milestones in the game. The rune wall puzzle is not complicated once you know which three bugs to collect and where to find them. Just remember the Crescent Wing Butterfly in Moon Hollow, the Spiny Harvestman in the Cave, and the Wasp Moth in the forest. Keep them in your inventory, walk up to the rune wall in Duneburrow, and you are in. If you are looking for more guides like this, check out our coverage of similar Roblox catching games for more tips and walkthroughs.