Grand Canyon Rims & Plateaus Real-World Terrains 66 km²

• Heightmaps - 16 x 16-bit greyscale PNG, 4033 x 4033 or 8129 x 8129 px: 12 maps of 4.03 x 4.03 km (about 4 x 4 km, 16 square km) and 4 maps of 8.13 x 8.13 km (about 8 x 8 km, 66 square km) at 1 m per pixel
• Relief - 67 m to 573 m per map (lowest point of each map at 0)
• Unity terrains - one terrain of 4097 samples per 4.03 km map and 2 x 2 terrains of 4097 samples per 8.13 km map, terrain holes for the exact edge
• Height precision - one height level is about 0.2 cm on the flattest map and about 1.8 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 - Arizona Strip Plateau + East Rim Woodland + West Canyon Benches (24 ground layers) + the shared ground layers, 4096 x 4096 albedo, normal and mask
• Rock beds - a bed table per demo map, read by the terrain shader in Built-in, URP and HDRP
• Water - transparent river and lake surfaces whose colour comes from the real water depth (depth texture), soft uneven 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, rock beds, shrubs and fine relief, for Built-in, URP and HDRP
• Editor tools - Terrain Builder, Project Setup, Grand Canyon Ground Textures; PDF documentation included
• Compatibility - Unity 2022.3 and above; Built-in, URP and HDRP

▶ Full 4K video showcase: https://youtu.be/2JVhrHRDwmM

The rims and plateaus of the Grand Canyon - Bulrush Point, Buggeln Hill and Desert View on the rim, the washes and mesas of the Arizona Strip and the deep side canyon of Kanab Creek - at 1 m between samples, up to 8 x 8 km per map

16 maps of the rims and plateaus of the Grand Canyon and the Arizona Strip from real-world elevation data (DEM). Rim points above the canyon at Bulrush Point, Buggeln Hill and Desert View, the sage plateaus, washes and mesas of the Arizona Strip at Wild Band and Robinson Wash, Sunshine Point, and the side canyon of Kanab Creek below Loco Point and Burnt Canyon Point - every ledge at 1 m between samples, with up to 573 m of relief on a single map. The maps cover 4.03 x 4.03 km (about 4 x 4 km, 16 square km) or 8.13 x 8.13 km (about 8 x 8 km, 66 square km) at 1 m between samples. Every Unity terrain sample is an original heightmap pixel - nothing is stretched or resampled - and 1 Unity unit is 1 metre.

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✦ WHAT'S INSIDE

• 16 heightmaps - 16-bit PNG, 4033 x 4033 or 8129 x 8129 px, relief from 67 m to 573 m per map
• Real-scale Unity terrains - one terrain of 4097 samples per 4.03 km map and 2 x 2 terrains of 4097 samples per 8.13 km map; the unused 64-sample edge strip is cut away with terrain holes
• 3 demo levels x 3 render pipelines - 9 ready scenes to fly or walk through: Bulrush Rim, Buggeln Hill Rim, Kanab Creek Canyon
• Terrain Builder - one click turns any heightmap into a real-scale Unity terrain
• 3 ground looks - Arizona Strip Plateau, East Rim Woodland and West Canyon Benches, 8 ground layers each in 4K: meadow, forest floor, dry earth, scree, rock, gravel, red rock, dark rock
• Dry season on the rim - the ground of the demo levels is painted from the real shape of each map: open sage and juniper on the Arizona Strip, pinyon-juniper woodland on the rim, rock beds on every cliff, pale talus and gravel washes

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✦ CANYON GROUND

• Rock beds from each map's own cliffs - the painter measures the map's cliffs and benches and writes a bed table that the terrain shader reads, so walls show level rock bands with ledges that catch the light
• Colour carried by the drainage - the ground below a wall takes the colour of the rock above it, carried down the map's real drainage
• Dry washes - gravel and cobble washes placed where the map's real drainage gathers and the ground levels off
• Shrubs and trees in the shader - separate pinyon, juniper and desert shrubs drawn by the terrain shader, following the painted ground
• Fine surface relief - lumps and hollows finer than the height data on the near ground, fading out with distance

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✦ FEATURES

• Sharp real-world maps - up to 8 x 8 km of real ground per map, at 1 m between samples: rim cliffs, single ledges, pour-offs, side canyons, mesas and dry washes 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 81-135 FPS · URP 90-183 FPS · Built-in 140-212 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 · western, survival and exploration 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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✦ THE GRAND CANYON SERIES

Neighbouring ground, never the same map twice:

• Grand Canyon Inner Canyons - https://assetstore.unity.com/packages/slug/426854
• Grand Canyon-Parashant - https://assetstore.unity.com/packages/slug/426856
• Lake Mead & Mojave Desert - https://assetstore.unity.com/packages/slug/426858

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✦ MORE REAL-WORLD TERRAINS

Same format, same tools:

• USA Sierra Nevada & Cascades - https://assetstore.unity.com/packages/slug/426148
• USA Rocky Mountains & Great Plains - https://assetstore.unity.com/packages/slug/426150
• USA California & Desert Southwest - https://assetstore.unity.com/packages/slug/426152
• USA Eastern Forests & Lakes - https://assetstore.unity.com/packages/slug/426154
• UK Fells, Moors & Dales - https://assetstore.unity.com/packages/slug/426156
• Alaska Mountain Peaks - https://assetstore.unity.com/packages/slug/425664
• Alaska Valleys & Uplands - https://assetstore.unity.com/packages/slug/425668
• Alaska Fjords, Lakes & Volcanoes - https://assetstore.unity.com/packages/slug/425670