In the scene there is an entrance group with a gabion fence.
Name: Fence_gabion_2014
Version: 2014

Units: Centimeters
Dimension: 1148 x 98 x 244
Polys: 904 705
XForm:Yes
Box Trick: Yes
Model Parts: 11
Render: Corona + Vray
Formats: 3Ds Max 2012
Material library: Corona Vray

Those who work in V-Ray versions lower than 3.1 be careful in the materials in the BRDF section there is Microfaset GTR ( GGX ) if your version is older than 3.1 then the BRDF field will be empty. Choose Blinn Phong or Ward – whatever suits you best.
For Corona render it is recommended to install a version of at least 1.5 since the glossiness of materials is configured with PBR in mind.