3DAssets.dev

Loading model

About

Tunnel mouth opens into a 6 m hall with a wide chamber port. 6.16 × 3.65 × 10.09 metres. Original CC0 static cave geometry with embedded nearest-filtered pixel textures. +Y up; grounded at y=0. No collision, navigation, rig or animation data.

Use with an AI agent

Copy this prompt into your AI chat, then describe what you want to build with the asset.

Use the “Tunnel chamber transition (Cave and Crystal Caverns)” asset in my project.

Model: https://cdn.3dassets.dev/assets/21220/v1/model.glb
Asset page: https://3dassets.dev/assets/cave-and-crystal-networks-tunnel-to-chamber-ee0f659e
Description: Tunnel mouth opens into a 6 m hall with a wide chamber port.

- Dimensions (X × Y × Z): 6.159 × 3.65 × 10.09 metres
- Triangles: 2.3k
- Animations: none
- Licence: CC0 1.0 Universal (https://creativecommons.org/publicdomain/zero/1.0/)
- Loading: Three.js GLTFLoader; no additional decoders required.

Also available as JSON, Markdown, or via the MCP server.

Import manually

Choose your framework, then copy the code into your project to load the asset.

import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js'

const loader = new GLTFLoader()
loader.load('https://cdn.3dassets.dev/assets/21220/v1/model.glb', (gltf) => {
  scene.add(gltf.scene)
})

Common questions

How do I use this model with my AI development tools?
Press "Copy for AI agent" above and paste the prompt into Claude Code, Cursor, Codex, GitHub Copilot, ChatGPT or any other coding assistant. The prompt carries the direct CDN URL, the real-world size, the licence and the loading notes, so the assistant can fetch the model and place it in your project without you writing the loader yourself. For a permanent connection, add the 3DAssets.dev MCP server to your tool with one command (for Claude Code: claude mcp add --transport http 3dassets https://3dassets.dev/mcp) and the assistant can then search the whole catalogue, fetch files and read the usage snippets on its own.

MCP server setupGuide for AI agents

How do I get started?
Three ways, from quickest to most automatic. Download the .glb with the button and drop it into your engine's asset folder, where it imports like any glTF file. Or skip the download: copy the three.js, React Three Fiber or model-viewer snippet under "Import manually", which loads the model straight from the CDN. Or connect your AI agent to the MCP server and ask for it by name, and it will find, fetch and place the model for you.

MCP server setupAPI reference

Which game engines and tools can I use this model with?
Anything that reads glTF, which today means all of the major ones: three.js and React Three Fiber on the web, Godot 4, Unity, Unreal Engine 5, Blender and the model-viewer web component. The model is a self-contained binary glTF (.glb) with textures embedded, so there is one file to import and no plugin, converter or decoder to install first.
How do I import this model into Unity, Godot, Unreal or Blender?
Unity: install the glTFast package (com.unity.cloud.gltfast) from the Package Manager, drop the .glb into Assets and drag the prefab in, or load it at runtime from the CDN URL. Godot 4: copy the file into the project folder and the editor imports it as a scene you can instantiate. Unreal Engine 5: File > Import with the built-in glTF importer, which converts the axes for you. Blender: File > Import > glTF 2.0. Units are metres with +Y up in the file, and every importer above handles the conversion to its own axes automatically.
Can I use this model in a commercial game, and do I need to credit anyone?
Yes to commercial use and no to credit. Every model on 3DAssets.dev is released under CC0 1.0 Universal, which places it in the public domain: use it in a paid game, an app, a film or a client project, modify it, redistribute it, and put nothing in the credits. A link back is welcome but it is entirely your choice.

CC0 licence text

Can I load it from the CDN instead of downloading it?
Yes. The .glb file has a permanent URL on cdn.3dassets.dev that is CORS-enabled and never changes content, so you can pass it straight to GLTFLoader, glTFast or model-viewer in production and cache it as hard as you like. Downloading is only needed for engines that import from disk.
Do I need Draco, Meshopt or KTX2 to load it?
No. The geometry is quantized with KHR_mesh_quantization and the textures are re-encoded to WebP, both of which three.js, Godot, Unity and Blender read natively, so a plain GLTFLoader is enough. There is nothing extra to configure and no decoder to ship with your bundle.

Tunnel chamber transition (Cave and Crystal Caverns)

Tunnel mouth opens into a 6 m hall with a wide chamber port.

Download asset · 124.7 KB

More in Nature & Landscape

Surf Cove Base (Beach Surf and Paddle Kit)

Surf Cove Base (Beach Surf and Paddle Kit)

33 by 22 m surf cove terrain: sand beach running down a wet sand slope into shallow water, broken shore foam and two outer surf lines, a seaweed wrack line, marram topped dune ridge with a plank boardwalk through it, a rocky point and scattered shells.

@3dassets15.8k tris · 68 ↓
Flood Debris Jam (Bellroot Fen Floodward Marches)

Flood Debris Jam (Bellroot Fen Floodward Marches)

Intertwined structural drift timbers resting on a silt bed, with a bowed trapped reed mat woven over the load-bearing tangle.

@3dassets19.4k tris · 51 ↓
City Broadleaf Tree (Fantasy MMO City And Townsfolk)

City Broadleaf Tree (Fantasy MMO City And Townsfolk)

Seven metre broadleaf street tree on a buttressed trunk, with five main limbs branching into fifteen boughs and a canopy layered from sixteen leaf masses, grass at its foot. Hand painted fantasy MMO city and RPG game asset.

@3dassets1.3k tris · 37 ↓
Pine Tree (Wipe Day Survival Island)

Pine Tree (Wipe Day Survival Island)

Free 3D low poly pine tree for survival game forests: a tapered driftwood trunk with four stacked needle cones, 5.4 m of harvestable wood.

@3dassets132 tris · 36 ↓
Brain coral (Coral Reef and Underwater Scenery)

Brain coral (Coral Reef and Underwater Scenery)

Massive coral head traced by raised winding meandering ridges.

@3dassets6.2k tris · 36 ↓
Tall Grass Clump (Wipe Day Survival Island)

Tall Grass Clump (Wipe Day Survival Island)

Free 3D low poly tall grass clump for island ground cover: eighteen fanned blades about 0.9 m wide and 1 m tall, cheap enough to scatter.

@3dassets216 tris · 35 ↓
Meadow Grass Clump (Dense Temperate Forest Flora)

Meadow Grass Clump (Dense Temperate Forest Flora)

A soft clump of meadow grass, short blades leaning out in every direction.

@3dassets288 tris · 33 ↓
Paddock Tree (Racecourse and Parade Ring)

Paddock Tree (Racecourse and Parade Ring)

A 4.7 m parkland tree with a rough timber trunk and four foliage masses over a grass collar, for the paddock, the car park edge and the boundary of a course.

@3dassets348 tris · 30 ↓
Shellback Nesting Hummock (Bellroot Fen Floodward Marches)

Shellback Nesting Hummock (Bellroot Fen Floodward Marches)

Low nesting hummock with two excavated concave bowls, a worn sloping front approach and short bedding stems seated along the recessed margins.

@3dassets16.2k tris · 30 ↓
Mireglass Mineral Vent (Bellroot Fen Floodward Marches)

Mireglass Mineral Vent (Bellroot Fen Floodward Marches)

Hollow mineral vent with thick crystallised crater walls, nested solid outflow lips and a seated mineral-water centre; original amber mireglass formation.

@3dassets7.2k tris · 29 ↓
Seasonal Flood Scar Cliff (Bellroot Fen Floodward Marches)

Seasonal Flood Scar Cliff (Bellroot Fen Floodward Marches)

Eroded peat cliff with three recessed flood strata, a stepped upper profile and anchored exposed roots following the scar face.

@3dassets3.9k tris · 29 ↓
Collapsed cave chamber (Cave and Crystal Caverns)

Collapsed cave chamber (Cave and Crystal Caverns)

Chamber with a missing roof and scattered floor breakdown.

@3dassets1.8k tris · 28 ↓

Similar assets

Entrance Tunnel Mouth (Velodrome and Track Cycling)

Entrance Tunnel Mouth (Velodrome and Track Cycling)

The mouth of the players tunnel onto the track apron: a 6 m concrete headwall with a 3.4 by 2.9 m dark opening, a capping band, a yellow lintel stripe and blue reveals. The opening is a recess, not a corridor.

@3dassets96 tris · 11 ↓
Tunnel to shaft chamber (Cave and Crystal Caverns)

Tunnel to shaft chamber (Cave and Crystal Caverns)

Short approach opens into a vertical access chamber with an open ceiling.

@3dassets1.5k tris · 10 ↓
Chamber to tunnel end cap (Cave and Crystal Caverns)

Chamber to tunnel end cap (Cave and Crystal Caverns)

Six-metre wall around a standard-width open arched tunnel mouth.

@3dassets700 tris · 10 ↓
Bank Hall Vault and Tunnel (Bank Vault Heist Kit)

Bank Hall Vault and Tunnel (Bank Vault Heist Kit)

Open bank hall with teller line, queued approach, secure mantrap and a circular vault door behind it. The raised vault floor contains a breach above an exposed approach tunnel. Cutaway layout omits roofs and front walls for inspection; static geometry.

@3dassets11.7k tris · 35 ↓
Sorting hall floor tile, 4 m (Parcel Depot and Sorting Hall)

Sorting hall floor tile, 4 m (Parcel Depot and Sorting Hall)

Power floated concrete hall floor module 4 m square and 120 mm thick with saw cut joints running both ways, a yellow lane line along one edge and edge ports on all four sides, so a hall floor of any size lays out on one grid.

@3dassets48 tris · 8 ↓
Sorting hall wall module, 4 m (Parcel Depot and Sorting Hall)

Sorting hall wall module, 4 m (Parcel Depot and Sorting Hall)

Ribbed grey cladding wall 4 m wide, 3.6 m tall and 160 mm thick on a concrete plinth, with a charcoal capping rail, a blue wayfinding band at 2.2 m and side ports on the centre line so a hall encloses itself.

@3dassets156 tris · 9 ↓
Sports Hall Roof Truss Bay (Community Sports Hall and Changing Rooms)

Sports Hall Roof Truss Bay (Community Sports Hall and Changing Rooms)

One bay of a sports hall roof: an 8.4 m tubular lattice truss spanning the hall, four purlins carrying the next bay and two suspended light bars under the bottom chord. Bays repeat along the hall on the 2 m module.

@3dassets1.3k tris · 12 ↓
Horse Walk Tunnel Mouth (Racecourse and Parade Ring)

Horse Walk Tunnel Mouth (Racecourse and Parade Ring)

The mouth of the horse walk: a 5.4 m ramped opening between rendered wing walls with a portal beam over it, a white guide rail each side and the tunnel falling away into the dark.

@3dassets360 tris · 14 ↓
Open player entrance tunnel (American Football Stadium Kit)

Open player entrance tunnel (American Football Stadium Kit)

5 m long player tunnel with 2.84 m total height and both ends open.

@3dassets208 tris · 8 ↓
Greybox wall with wide window opening (Modular Greybox Architecture Kit)

Greybox wall with wide window opening (Modular Greybox Architecture Kit)

A 4 m wall with a 2.8 m by 1.4 m wide window opening on a 0.9 m sill, leaving 0.6 m piers. Shop fronts, offices and viewing galleries.

@3dassets192 tris · 12 ↓
Steel hall corner column, 6 m (Machine Shop and Factory Hall)

Steel hall corner column, 6 m (Machine Shop and Factory Hall)

Corner post for the hall grid: a 6 m box section on a wide base plate with two gusseted cleats, one for each cladding run meeting at the corner.

@3dassets168 tris · 11 ↓
Hall roller shutter door bay (Machine Shop and Factory Hall)Animated

Hall roller shutter door bay (Machine Shop and Factory Hall)

Cladding bay with a 4.2 m by 4.3 m shutter opening: charcoal jambs and lintel, a shutter hood and a slatted curtain that lifts clear of the opening.

@3dassets252 tris · 10 ↓