The glacier of Eris in Iceland
https://en.wikipedia.org/wiki/Farthings_of_Iceland#/media/File:1761_Homann_Heirs_Map_of_Iceland_%22Insulae_Islandiae%22_-_Geographicus_-_Islandiae-hmhr-1761.jpg
I looked to see if it was in Wikipedia's Eris (disambiguation) page ( https://en.wikipedia.org/wiki/Eris_(disambiguation) ) but it is not.
Something powerful is intentionally snubbing the existence of Eris's influence
This is Eris. Say something nice about them. https://en.wikipedia.org/wiki/Eris_(spider)
https://www.geonames.org/8521297/eris-glacier.html https://www.geonames.org/5949264/eris-lake.html https://www.geonames.org/2929629/erisberg.html
This is the only other place that mentions an Eris glacier in Iceland but it is clearly talking about Eiríksjökull: https://www.islande-zou.fr/traces-bandits-vikings-grotte-de-lave/