# Loading Offline Data in unreal

**URL:** <https://community.cesium.com/t/loading-offline-data-in-unreal/36670>\
**Category:** Cesium for Unreal\
**Created:** [November 18, 2024, 10:17am UTC](https://community.cesium.com/t/loading-offline-data-in-unreal/36670 "2024-11-18T10:17:40Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Chandu\_Reddy](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/chandu_reddy/32/3476_2.png) [@Chandu\_Reddy](https://community.cesium.com/u/Chandu_Reddy)\
**Post date:** [November 18, 2024, 10:17am UTC](https://community.cesium.com/t/loading-offline-data-in-unreal/36670/1 "2024-11-18T10:17:40Z")

</div>

Hi everyone,

I need to download terrain data for a 1000 km² area, but I see that Cesium’s terrain service allows only up to 25 km² for each download. I would like to load this larger terrain data offline for use in my application.

What are the best approaches to achieve this? Is there a way to download and combine multiple smaller terrain tiles, or is there a recommended solution for working with larger terrain datasets offline?

---

<div class="post-metadata">

**Author:** ![lisabos](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/lisabos/32/2849_2.png) [@lisabos](https://community.cesium.com/u/lisabos)\
**Post date:** [November 18, 2024, 2:57pm UTC](https://community.cesium.com/t/loading-offline-data-in-unreal/36670/2 "2024-11-18T14:57:54Z")

</div>

Hello! The easiest options would be a custom subscription for ion SaaS (with a larger quota of clips) or to license Cesium World Terrain and Cesium ion Self-Hosted for use in your own environment (higher clipping sizes are supported with Self-Hosted). I believe you’ve also started a conversation with an account manager, so you’ll receive more details through that path.

Maybe someone else wants to comment on combining terrain tiles?