This is a paid asset, but now you can download Winter Tundra – Ice & Rock Pack Free.
Detail this asset from Unity Store: Original Link
Winter Tundra – Ice & Rock Pack v1.1 (Latest version)
Supports Unity 2019.3+, High Definition Render Pipeline, Universal Render Pipeline, and Standard. After importing package, follow README instructions. Example scenes for URP and Standard versions are partial support only and are not as polished as HDRP version.
Winter Tundra – Ice & Rock Pack is a huge collection of 140+ assets built from the ground up to take full advantage of the High Definition Render Pipeline. These assets were carefully sculpted, textured, and optimized to create beautiful and performant environments.
All snow-covered assets include versions without snow, for a total of over 230 prefabs!
Link to Forum Thread
Link to PC demo builds (music and sound not included).
Demo scene is included in package.
IMPORTANT: To install, first import main package from Asset Store, then import included Render Pipeline-specific package. See README file after first import for full installation instructions. Example scene for Standard version of package requires installation of Post Processing, also via the Package Manager.
All assets except for background mountains are setup with LODs. Triangle counts for LOD0 vary between 11,000 for the most detailed rock formation all the way down to just 80 for the smallest snowball, while most assets fall between a couple hundred to a couple thousand.
Most included albedo maps are 2048×2048, most normal maps are imported between 1024×1024 and 2048×2048, and most maskmaps are imported at 512×512. Most included textures are native 2048×2048 so they can be adjusted as seen fit. Nearly all assets make use of detail maps.
Many assets are UV packed and textured together in sets. Most mid-sized rock formations are textured by themselves, while most large formations share a tiled cliff texture.
Most included assets use custom shaders which are fully editable with Amplify Shader Editor.
Store page screenshots were captured in HDRP.