# The terrain is uneven, how to get a relatively flat terrain?

**URL:** https://community.cesium.com/t/the-terrain-is-uneven-how-to-get-a-relatively-flat-terrain/18261
**Category:** Cesium for Unreal
**Created:** [April 21, 2022, 11:45am UTC](https://community.cesium.com/t/the-terrain-is-uneven-how-to-get-a-relatively-flat-terrain/18261 "2022-04-21T11:45:02Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Xiaoguang](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/xiaoguang/32/3476_2.png) [@Xiaoguang](https://community.cesium.com/u/Xiaoguang)
#### Post date: [April 21, 2022, 11:45am UTC](https://community.cesium.com/t/the-terrain-is-uneven-how-to-get-a-relatively-flat-terrain/18261/1 "2022-04-21T11:45:02Z")

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The terrain is uneven, how to get a relatively flat terrain?

 ![image](https://global.discourse-cdn.com/cesium/original/2X/a/a0144f365e5b9fc94bab9ce4fe5a03969e9c973f.png)

 ![image](https://global.discourse-cdn.com/cesium/original/2X/b/b682d8e38b2ff34541626d099099591fa680fdce.jpeg)

The ground here is actually very flat, but in Cesium’s terrain it is bumpy.

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### Author: ![RidhwanAziz](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/ridhwanaziz/32/8496_2.png) [@RidhwanAziz](https://community.cesium.com/u/RidhwanAziz)
#### Post date: [April 22, 2022, 1:21am UTC](https://community.cesium.com/t/the-terrain-is-uneven-how-to-get-a-relatively-flat-terrain/18261/2 "2022-04-22T01:21:23Z")

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HI Xiaoguang.

I guess, this is quite a common question being posted. This is one of the (temporary) solutions which @agallegos has suggested recently if you want to achieve a flat terrain but still maintaining the ellipsoid shape of the earth. Hope this is relevant to what you want to achieve.

> [@Using a global terrain layer without height detail](https://community.cesium.com/t/cesium-world-terrain/17763/10):
>
> Hi @RidhwanAziz and @Dan, I tested out using a large DEM file to set the height to 0, and it seems to work fairly well for creating a basic ellipsoid. If you’d like to do the same while you wait for full support, you can use this file: [DEM0.zip](https://community.cesium.com/uploads/short-url/sq1OmzhD8J9J2y3hU5BX2stKU3o.zip) (100.0 KB) Unzip the file, and upload the DEM0.tif file to Cesium ion. Use the following settings: Select the Raster Terrain option for “What kind of data is this?” select Mean Sea Level as the base terrain Height Unit and Height Reference can be lef…

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### Author: ![janine](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/janine/32/5135_2.png) [@janine](https://community.cesium.com/u/janine)
#### Post date: [November 27, 2024, 3:23pm UTC](https://community.cesium.com/t/the-terrain-is-uneven-how-to-get-a-relatively-flat-terrain/18261/3 "2024-11-27T15:23:56Z")

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Old thread, but updating for future’s sake.

Support for [WGS84 ellipsoid terrain](https://github.com/CesiumGS/cesium-unreal/pull/1555) has been added to Cesium for Unreal. It will be available in the next release!