The archive contains:
5 textures (Diffuse, Diffuse, Glossines, Normal, Displacement (Height)).
Texture resolution 4096x4096px.
Seamless textures.
4 Models
2 High polygonal, the relief is made of geometry.
2 Low poly, under the Displacement (Height) texture
The materials are logically named for ease of scene management.

Check in the scene settings that you have Displacement enabled
Displacement in Render Setup:
Corona: Performance tab - Displacement - Screen Size (px): 2

Corona 7 version
Materials used in the model:
CoronaLegacyMtl - requires CoronaRender version at least 1.5