In Numenor, the Narn i Hin Hurin was adapted into a cycle of plays that were performed yearly and which had a Not-so-subtle symbolic (though not literal) conflation of Tol Morwen with Numenor.

There were also many offshoot operas, dances, artworks, etc, focusing on expanding one element or episode of the Narn and building up a very dense and elaborate system of idioms and visual references that became so ubiquitous that without context (say, if you were from a culture who wasn’t familiar with the Narn and therefore didn’t know the significance of a black weapon, a tool that talks, a hight above a rushing river, a chair from which one could have a far view, nakedness in the wild, a staring contest, a death by upright impalement, a prick of the foot, a shivering attack), a fair amount of numenorean literature, art, and discourse would have parts that were pretty baffling.