Siberia Mountain Valleys Real-World Terrains 264 km²

• Data - 47 heightmaps, 16-bit PNG, 8129 x 8129 px at 2 m per pixel - 264 km² per map
• Relief range - 512 m to 1,280 m
• Terrain layout - 2 x 2 tiles of 4097 samples, the original pixels, edge strip removed with holes
• Vertical step - 15.6 to 39.1 mm per height level (Unity stores 32,767 levels)
• Scenes - Broad Mountain Valley, Basin Edge Summit, Range above the Basin x Built-in / URP / HDRP; 3 prefabs
• Layers - 8 layers, 4096 px albedo with smoothness, normal and mask maps
• Painter settings - Snow, Scour, Slab, Rock Amount, Pale Rock, Kurum, Tree Line, Sun Bare, Wind From, Frozen Water, Bare Ice, River Ice, Seed, Beds
• Shading - hex-tile anti-tiling, side projection on walls, snow / rock per pixel, world-space wind forms, matte snow and glossy ice
• Included tools - Terrain Builder, Project Setup, Siberia Winter Ground painter, PDF guide
• Unity version - Unity 2022.3 and above

▶ Mountain valley flight in 4K: https://youtu.be/qarD4jmcsp4

​Mountain valleys of Siberia in deep winter - 47 real-world maps at 1:1 scale, 16-bit, 2 m per pixel

Ranges cut by broad U-shaped valleys and wide basins, from real-world elevation data (DEM) of Russia - Siberia. One map is a square of 16,256 m (264 km²) with 512 m to 1,280 m between its lowest and its highest point.

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✦ FROM THE VALLEY FLOOR TO THE RIDGE

• Valley floors and basins - sheltered, level and full of soft powder
• South-facing slopes - steep slopes that face the low sun carry only thin snow, with straw-coloured grass tips showing
• Above the tree line - hard wind-packed snow, scoured crests and the first rock
• Cliffs and crags - dark bedded rock and pale grey granite, snow lying on the ledges, block fields beneath

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✦ WHAT YOU GET

• 47 heightmaps as 16-bit greyscale PNG, 8129 x 8129 px - the exact original pixels
• 2 x 2 Unity terrains per map (4097 samples each) with shared edge samples: no seam, no resampling
• 3 demo maps x 3 render pipelines = 9 scenes: Broad Mountain Valley, Basin Edge Summit and Range above the Basin
• Terrain Builder: one click per heightmap; full, half or quarter detail
• 8 ground layers in 4K and one winter terrain material for Built-in, URP and HDRP
• Siberia Winter Ground: the painter of the demo maps, for any terrain

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✦ THE PAINTER IN SHORT

Select a terrain - or the four tiles of a map, which are painted as one surface - and open Tools > Lidar Terrains > Siberia Winter Ground > Paint Selected Terrains... The Mountain Valleys preset loads with one click, and every value can be changed:

• Sun Bare - how much of the steep sunny slopes loses its snow
• Tree Line - the height where sheltered powder gives way to wind-packed snow
• Snow, Scour, Slab - the overall snow, the scoured crests and the hard snow on open ground
• Wind From and Seed - the wind direction of all wind forms, and a seed that moves every patch
• Frozen Water - finds level lakes and wide rivers and paints them as ice (can be switched off)

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✦ HOW IT RENDERS

• No repeats - hex-tile stochastic sampling, several distance scales and 4-scale ground variation
• Sharp snow edges on rock - snow against rock is decided per pixel: ledges, ribs and couloirs
• Wind forms - sastrugi (wind-carved ridges) drawn in world space in the hard snow
• Steep walls - side projection instead of stretched textures
• Winter light - demo sun 13 degrees high in the southern sky; long blue shadows fill the valleys

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✦ SPEED

Every demo scene, player build, 3840 x 2160 native, RTX 3090: HDRP 96-155 FPS · URP 97-187 FPS · Built-in 169-357 FPS.

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✦ COMPATIBILITY

Unity 2022.3 and above; Built-in, URP and HDRP from a single package. Heights are stored at Unity's limit of 32,767 levels (15.6 to 39.1 mm per level here), with the lowest point of every map at 0. The pack is ground only - no plant or object meshes, no water surfaces - and nothing in it obliges you to credit anyone.

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✦ ALSO IN THE SIBERIA SERIES

• Frozen Lakes & River Plains - clear lake ice and snow dunes on the lowlands: https://assetstore.unity.com/packages/slug/429844
• Taiga Uplands & Plateaus - table lands, scarps and block fields: https://assetstore.unity.com/packages/slug/429846
• High Ranges - up to 1,638 m of relief in one map: https://assetstore.unity.com/packages/slug/429850