When the gallery’s overhead lights dim to the deep green of a jungle, the long neck of a Brachiosaurus slowly rises from a bed of ferns in the "Prehistoric Ecosystem Hall" on the third floor of Chengdu Natural Science Museum. This isn’t a documentary projection—it’s the 2025 "Cretaceous Secret Realm" indoor animatronic dinosaur exhibition, newly launched at the museum. As the largest natural science venue in southwest China, it has brought "living dinosaurs + fossil skeletons" into a enclosed gallery, letting visitors step into a prehistoric jungle just by treading on simulated moss.

A Prehistoric Ecosystem in a Sealed Gallery

The moment you step into the hall, a damp "jungle atmosphere" (museum-simulated negative ion mist) wraps around you. In the center, a 12-meter-long Brachiosaurus animatronic takes center stage: its light brown silica gel skin clings to raised ribs, its neck sways slowly via built-in mechanical axes, and it occasionally emits a low rumble. Nearby, a Pterosaur hangs from the ceiling by thin steel wires, its wings flapping steadily—its shadow stretches across the black ceiling, as if it’s gliding low. In the bottom left corner, a Triceratops gapes, revealing serrated teeth, while its pink tongue twitches gently: its skin, warm to the touch, has scale patterns identical to the skin impressions found on Triceratops fossils.

The exhibit’s greatest charm is its blend of real and simulated: right beside the Brachiosaurus stands a full-scale replica of a dinosaur skeleton fossil. The skeleton’s joint angles and bone thickness perfectly match the animatronic next to it. The information plaque reads: "This model is reconstructed from Mamenchisaurus fossils unearthed in Zigong, Sichuan. The 'muscle lines' beneath the silica gel skin are all based on the skeleton’s attachment points."

Interactive Prehistoric Giants

The exhibition’s standout feature is its motion-activated sensors: when you step under the Pterosaur, it suddenly folds its wings and "dives" (a small downward movement) while letting out a sharp cry; reach out to touch the Triceratops’ back, and it will flick its tail, its "roar" growing louder. These interactions are hidden in the silica gel skin’s sensors—they preserve the "giant beast" intimidation factor without making visitors feel unsafe.

In a corner, a "skin texture zone" displays transparent cases holding sample pieces of simulated dinosaur skin, labeled with "Type B silica gel + elastic fiber" material notes. A nearby screen loops a short film on "how dinosaur skin is reconstructed": the silica gel skin’s colors are based on pigment particles 残留 in fossils— the Brachiosaurus’ light brown and the Triceratops’ gray-purple are all "scientifically restored hues."

A "Conversation" Between Fossils and Animatronics

In the back half of the hall, animatronics and fossil skeletons are displayed in a mix: the claw of a T. rex animatronic rests beside a small dinosaur skeleton, recreating a "predation scene"; an Oviraptor model crouches by a pile of simulated dinosaur eggs, while a nearby case holds real dinosaur egg fossils. The guide will joke: "We now know Oviraptors were actually protecting eggs—this model is their 'exoneration scene'."

Even the floor hides details: simulated moss is embedded with "dinosaur footprint casts," matching the patterns of the museum’s footprint fossils. Kids squat to compare them, while the guide explains how to calculate a dinosaur’s weight from its footprints.

The "Jungle Night Talk" Late-Night Session

Every Friday, the hall opens for a "late-night session": overhead lights shift to warm yellow "moonlight," the animatronics’ eyes glow faintly, and the background sound switches to insect chirps and wind. Families come to "night-explore the jungle," sitting in the rest area as the Brachiosaurus’ neck sways slowly in the "moonlight"—as if it’s truly active in a prehistoric night.

This exhibition, tucked inside the science museum, wraps "rigorous fossil science" in "vibrant animatronics." When you touch the silica gel dinosaur skin, then turn to look at the skeleton beside it, you’ll suddenly realize: those cold fossils once belonged to creatures this alive.