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Walkable demo
Lost Valley Trail
Walk a jungle loop past nesting meadows, grazing herds, striding sauropods and a tyrannosaurus guarding its clearing.
About
A 68 by 56 m outdoor valley loop walked south to north, built from every one of the pack's 19 members. Two habitat island pads form planted clearings in the north corners, and the pack's two composed scenes anchor the ends of the loop: the herbivore grove in the west and the predator clearing in the east.
Placed: all 10 dinosaurs (tyrannosaurus twice, velociraptor five times as a hunting pack, brachiosaurus, diplodocus, spinosaurus, triceratops, stegosaurus, parasaurolophus, pachycephalosaurus and ankylosaurus pairs), six egg nests ringed with speckled eggs, and deep planting of cycads, tree ferns, ground ferns and mossy boulders, including beds on top of the island pads and thickets along the fence.
What moves: nothing. The pack ships no animation clips, so every placement uses the default proximity behaviour with no clips to trigger, and all figures read as posed sculptures. The tyrannosaurus at the clearing mouth and the circling raptors are staged poses, not loops.
What is not placed and why: nothing is left out. All 19 published members appear, most many times. The 48 distinct model target does not apply here because the pack holds 19 designs, so density comes from repeats: fern beds, egg rings and the five strong raptor pack.
Every piece here is a published model from the pack, placed by hand. Walk with the keys or touch, and approach a piece to see it move if it has animation. Colliders, navigation and gameplay are yours to add.
Points of interest
Hatchery meadow
Egg nests ringed with speckled eggs fill the sunny south meadow, with an ankylosaurus pair browsing the cycads behind them.
Dinosaur Egg Nest (Lost Valley Dinosaurs)Horned herd
Triceratops graze the western ferns beside the herbivore grove scene, while parasaurolophus call from the tree line.
Triceratops (Lost Valley Dinosaurs)Plate backs
Two stegosaurus and a browsing pachycephalosaurus work the eastern cycad beds, with mossy boulders scattered between them.
Stegosaurus (Lost Valley Dinosaurs)Valley crossing
The loop crosses the open prairie between the two composed scenes, with sauropods on both sides and fern thickets ahead.
Brachiosaurus (Lost Valley Dinosaurs)Sauropod giants
A brachiosaurus pair and two diplodocus stride the central prairie, the tallest animals in the valley at nearly five metres.
Diplodocus (Lost Valley Dinosaurs)Raptor pack
Five velociraptors circle the scrub between the sauropods and the predator clearing, hunting in the open.
Velociraptor (Lost Valley Dinosaurs)Tyrant of the clearing
A tyrannosaurus guards the mouth of the predator clearing scene, with a second rex watching the north fence behind it.
Tyrannosaurus (Lost Valley Dinosaurs)Sailback shore
A spinosaurus fishes the north fern beds beside a triceratops, with the valley fence and jungle thicket closing the loop behind.
Spinosaurus (Lost Valley Dinosaurs)
Use with an AI agent
Copy this prompt into your AI chat to rebuild the layout, then describe what to change.
Rebuild the "Lost Valley Trail" demo scene from the Lost Valley Dinosaurs pack in my project. Layout (JSON, every placement with its CDN URL): https://3dassets.dev/api/v1/demos/lost-valley-dinosaurs Pack manifest: https://3dassets.dev/api/v1/packs/lost-valley-dinosaurs Demo page: https://3dassets.dev/demos/lost-valley-dinosaurs - 207 placements of 19 models; units are metres, +Y up, rotation is yaw in degrees about +Y - Spawn at (0, 0, 25) facing 180 degrees; eye height 1.6 m - Licence: CC0 1.0 Universal (no attribution required) - Loading: three.js GLTFLoader, one load per distinct model, cloned per placement; no decoders required
Also available as JSON or Markdown, and via the MCP server.
Common questions
How do I use Lost Valley Trail with my AI development tools?
How do I get started?
Which game engines and tools can I use Lost Valley Trail with?
How do I import this scene into Unity, Godot, Unreal or Blender?
Can I use Lost Valley Trail in a commercial game, and do I need to credit anyone?
Can I load it from the CDN instead of downloading it?
Is the demo itself a file I can download?
Can I change the scene, or add gameplay to it?
Models in this demo
Herbivore Grove (Lost Valley Dinosaurs)
A small fictional grove with three herbivores, a nest and prehistoric foliage.
Predator Clearing (Lost Valley Dinosaurs)
Two predators explore a fern-filled island, with open space for gameplay.
Triceratops (Lost Valley Dinosaurs)
Three-horned ochre herbivore with a broad coral-and-gold frill.
Stegosaurus (Lost Valley Dinosaurs)
Jade herbivore with staggered coral plates and four tail spikes.
Ankylosaurus (Lost Valley Dinosaurs)
Blue armoured dinosaur with gold scutes, flank spikes and a tail club.
Brachiosaurus (Lost Valley Dinosaurs)
Tall jade sauropod with an upright neck and tiny rounded head.
Diplodocus (Lost Valley Dinosaurs)
Blue sauropod with a low sweeping neck and long balancing tail.
Parasaurolophus (Lost Valley Dinosaurs)
Ochre duckbill with a long swept-back tubular crest.
Pachycephalosaurus (Lost Valley Dinosaurs)
Jade dome-headed dinosaur with a ring of pale skull knobs.
Tyrannosaurus (Lost Valley Dinosaurs)
Coral predator with a broad jaw, tiny arms and cream teeth.
Spinosaurus (Lost Valley Dinosaurs)
Blue river predator with a tall coral sail and elongated snout.
Velociraptor (Lost Valley Dinosaurs)
Small jade runner with feather fans and raised sickle claws.
Dinosaur Egg Nest (Lost Valley Dinosaurs)
Raised earthen nest holding three pale eggs.
Speckled Dinosaur Egg (Lost Valley Dinosaurs)
Standalone cream egg with warm ochre speckles.
Habitat Island (Lost Valley Dinosaurs)
Oval grassy display island, approximately eleven metres wide.
Ground Fern (Lost Valley Dinosaurs)
Low radial fern for nest edges and forest floors.
Cycad (Lost Valley Dinosaurs)
Short woody cycad with a radial crown of broad fronds.
Tree Fern (Lost Valley Dinosaurs)
Tall slender tree fern with a spreading green canopy.
Mossy Boulders (Lost Valley Dinosaurs)
Rounded earth-coloured boulder cluster with a moss cap.