In the scene there are three spruce trees covered with snow 7 8 9 meters high:

Name: Spruce_3_snow_2014_corona
Version: 2014
Units: Centimeters
Dimension: 368 x 358 x 683
456 x 466 x 846
449 x 453 x 992
Polys: 1243352
XForm:Yes
Box Trick: Yes
Model Parts: 3
Render: Corona
Formats: 3Ds Max 2014
Material library: Corona Vray (in addition to the Corona material library the archive also contains a material library for 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.