Alaska Valleys & Uplands Real-World Terrains 406 km²

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.

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

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

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)

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

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.

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.