Alaska Valleys & Uplands Real-World Terrains 406 km²

34 real-world maps of Alaska's valleys and uplands, 20 x 20 km (406 km²) each at 5 m, 1:1 scale, original + enhanced versions. 9 demo scenes, Built-in/URP/HDRP.

• Heightmaps - 98 x 16-bit greyscale PNG, 4033 x 4033 px: 34 maps of 20.16 x 20.16 km (about 20 x 20 km, 406 square km) at 5 m per pixel
• Versions - A = the original real-world elevation data, B and C = enhanced by the author with extra fine detail (same ground, same size and height range)
• Relief - 307 m to 1,454 m per map (lowest point of each map at 0)
• Unity terrains - one terrain of 4097 samples per map, terrain holes for the exact edge
• Height precision - one height level is about 0.9 cm on the flattest map and about 4.4 cm on the map with the largest height range
• Demo content - 3 map prefabs (one prefab works in every pipeline) + 9 demo scenes (3 per pipeline)
• Ground textures - 8 Alaska Valleys and Uplands ground layers + the shared ground layers, 4096 x 4096 albedo, normal and mask
• Water - transparent lake and river surfaces whose colour comes from the real water depth (depth texture), soft shorelines, travelling waves and river flow, for Built-in, URP and HDRP
• Shaders - anti-tiling, world-aligned terrain shaders with side projection on steep faces (triplanar) for Built-in, URP and HDRP
• Editor tools - Terrain Builder, Project Setup, Alaska Ground Textures; PDF documentation included
• Compatibility - Unity 2022.3 and above; Built-in, URP and HDRP

▶ Full 4K video showcase: https://youtu.be/0jkQFfdAELo

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The valleys and uplands of interior Alaska - lower mountain ranges, broad valleys, rolling uplands, a great meandering river and lake-dotted lowlands - at their real size, 20 x 20 km per map

34 maps of the valleys and uplands of interior Alaska from real-world elevation data (DEM). Lower mountain ranges and broad valleys, rolling interior uplands, a great meandering river with oxbow lakes and thaw ponds, and long valley lakes of interior Alaska. Each map covers 20.16 x 20.16 km (about 20 x 20 km, 406 square km) at 5 m between samples. Every Unity terrain sample is an original heightmap pixel - nothing is stretched or resampled - and 1 Unity unit is 1 metre. Version A of each map is the original real-world elevation data; versions B and C are enhanced by the author with extra fine detail (gullies, rock texture and small landforms) - same ground, same size, same height range.

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✦ WHAT'S INSIDE

• 34 maps, 98 heightmaps - every map as version A (the original real-world elevation data) and versions B and C (enhanced by the author with extra fine detail); 16-bit PNG, 4033 x 4033 px, relief from 307 m to 1,454 m per map
• One Unity terrain per map - 4097 samples at the map's own 5 m spacing; the unused 64-sample strip at the edge is cut away with terrain holes
• 3 demo levels x 3 render pipelines - 9 ready scenes to fly or walk through: Valley Lake, Upland Lakes, Mountain Valley
• Terrain Builder - one click turns any heightmap into a real-scale Unity terrain
• Alaska Valleys and Uplands ground look - 8 ground layers in 4K (meadow, forest floor, dry earth, scree, rock, gravel, bog, lake bed)
• Shore water - transparent valley lakes, a great meandering river with oxbow lakes and thaw ponds: clear at the shoreline, the bed visible in the shallows, darker water further out, rivers that follow the valley downhill, a thin moving shore film and wet ground just above the water, in Built-in, URP and HDRP
• Alaska in winter - the ground of the demo levels is painted from the real shape of each map: soft snow over the tussock tundra, snow under the spruce in the valleys, wind-scoured heath on dry ridges, frozen muskeg around the ponds and rock only on the steepest walls

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✦ FEATURES

• Huge real-world maps - 20 x 20 km of real ground in every map, at 5 m between samples: valley floors, terraces, meanders, oxbow lakes, thaw ponds and rolling upland ridges are in the data itself
• Exact scale - size and height range are in every file name and inside every PNG, and the builder reads them for you
• Anti-tiling terrain shaders - every layer blends three texture sizes by viewing distance, so no repeating patterns
• Cliffs without stretching - textures are projected from the side on steep faces, so walls show real rock texture instead of vertical streaks; flat ground is unchanged
• Verify - compares every terrain height with the original pixels

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✦ PERFORMANCE

• Native 3840 x 2160 - no upscaling, demo scenes in player builds: HDRP 122-170 FPS · URP 131-177 FPS · Built-in 280-390 FPS (RTX 3090)

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✦ DEMO CONTROLS

Mouse look · WASD move · Shift fast · G walk at 1.8 m eye height · F fly · N / P next / previous level · H help

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✦ UNITY 2022.3 AND ABOVE

Built-in, URP and HDRP in one package. Tools > Lidar Terrains > Project Setup switches on terrain holes, and Shore Water Setup the depth and opaque textures the water reads, in your pipeline asset with one click. The Built-in Render Pipeline has no post-processing, so the Built-in demo levels look simpler than the URP and HDRP ones.

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✦ USE CASES

Open-world games · flight and driving simulators · hiking, hunting and survival games · cinematics · terrain studies. The heightmaps also work in other tools: 16-bit PNG, north up, size and height range in the file name.

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✦ MORE REAL-WORLD TERRAINS

Same format, same tools:

• British Columbia Alpine Peaks - https://assetstore.unity.com/packages/slug/425040
• British Columbia Mountain Valleys - https://assetstore.unity.com/packages/slug/425042
• British Columbia Lakes & Rivers - https://assetstore.unity.com/packages/slug/425044
• British Columbia Plateau & Eskers - https://assetstore.unity.com/packages/slug/425046
• New Brunswick Fundy Highlands - https://assetstore.unity.com/packages/slug/424740
• New Brunswick Charlotte Granite Lakes - https://assetstore.unity.com/packages/slug/424736
• New Brunswick Carleton Hills & River - https://assetstore.unity.com/packages/slug/424738
• New Brunswick Acadian Bogs & Streams - https://assetstore.unity.com/packages/slug/424732