> For the complete documentation index, see [llms.txt](https://realmofhistoria.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://realmofhistoria.gitbook.io/docs/realm-of-historia-carahunge-x-tm-nft/digital-art/the-key-stone-223.md).

# The Key Stone (223)

This large numbered stone is the crown jewel of the collection. It symbolizes the historical and astronomical significance of the Carahunge site, acting as a key to unraveling the mysteries of our ancestors.

The rarity of these stones mirrors their critical importance in the archaeological site, serving as time-markers and celestial pointers.

<figure><img src="/files/jmiJZpCrQGJdfiHQPguE" alt=""><figcaption><p>e.g. The Keystone - Realm of Historia: Carahunge X</p></figcaption></figure>