# Structure: Tough Rock Formation item

> A set of materials used to set up a Tough Rock Formation in the Stronghold. It comes out of Luminous Pirate Chest.

Canonical: https://lostark.wiki/database/items/structure-tough-rock-formation-78500063

*Rare*

A set of materials used to set up a Tough Rock Formation in the Stronghold.

It comes out of [Luminous Pirate Chest](https://lostark.wiki/database/items/luminous-pirate-chest-86001021).

## Facts

- **Shop sale**: Not for sale
- **Binding**: Bind on pickup

## Acquisition & uses

- [Contained in](https://lostark.wiki/database/items/structure-tough-rock-formation-78500063#relationships) (1)

### Contained in

1–1 of 1

| Name | Quantity | Details |
| --- | --- | --- |
| [Luminous Pirate Chest](https://lostark.wiki/database/items/luminous-pirate-chest-86001021) | 1 | Obtain all of the following items.; Quantity 1 |

## Related

- [Home](https://lostark.wiki/)
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- [Structures](https://lostark.wiki/database/items/category/structures)