# Remote Island: Underground Space research

> Remote Island: Underground Space: Required Materials. Timber, Iron Ore

Canonical: https://lostark.wiki/database/stronghold-research/remote-island-underground-space-106615?relation=research_materials

A door is found in the remote island which leads to an endless underground space.  
What could possibly be under there?

## Facts

- **Category**: Stronghold and Slot Extension
- **Time Taken**: 0d 07:00:00
- **Required Action Energy**: 2,074
- **Research Cost**: 258 Gold
- **Stronghold XP gained**: 4,147
- **Research Requirements**: Lab Lv. 8; Stronghold Lv. 65 or above; [Manor Lv. 8](https://lostark.wiki/database/stronghold-research/manor-lv-8-101008); [Remote Island: Celebration](https://lostark.wiki/database/stronghold-research/remote-island-celebration-106614)

## Related

- [Research Requirements](https://lostark.wiki/database/stronghold-research/remote-island-underground-space-106615#relationships) (2)
- [Required Materials](https://lostark.wiki/database/stronghold-research/remote-island-underground-space-106615?relation=research_materials#relationships) (2)

### Required Materials

1–2 of 2

| Name | Quantity | Details |
| --- | --- | --- |
| [Timber](https://lostark.wiki/database/items/timber-6882301) | 25 | Quantity 25 |
| [Iron Ore](https://lostark.wiki/database/items/iron-ore-6882401) | 25 | Quantity 25 |

## Related

- [Home](https://lostark.wiki/)
- [Stronghold Research](https://lostark.wiki/database/stronghold-research)