This is a platform ground model used for scene display and rendering. This model has PBR material, texture 4096 pixel, png format. The model is obtained by direct high-poly subtraction, so there is no structural normal map, only texture map.
The model was originally a patch model, not a solid body. In order to facilitate 3D printing, the thickness was increased and the bottom surface was sealed later, so the side UVs were not perfectly unfolded and the bottom surface was N-sided.
Please see the screenshot for details.
You can get more information from the preview pic.If any question please write to me.