Easy Environments: Frozen Lake is a huge winter environment with several amazing features:
There are three variations of ice included: "Solid", "Broken" and "Fishing Hole", a road that runs along the shore, with soft, ambiguous tracks which should work for both contemporary and historical vehicles, and footprint morphs that can be dialed in on the small pier and on the terrain between road and ice!

The Easy Environments series combines high-res 360° Skysphere/HDRI backgrounds with terrain geometry to place your characters on, and this icy, wintertime, rural and scenic environment delivers a ready-made scene for all of your snowy needs.

The set includes two Skysphere/HDRI variations: wide and close (refering to the distance of the mountains).  Lighting is included for both versions (Iray through the HDR environment, 3Delight parented to the skysphere).  3Delight users can choose between a a high quality preload featuring true reflections, and a version using EnvMap reflections for faster rendering or use on lower spec systems.

The file format is native .DUF for 3Delight and Iray.

Look for additional info and tips here: http://flipmode3d.com/easy-environments/#FrozenLake