Hola! Thanks for playing :)
None of us are from Andorra nor ever visited Engolasters, haha. But when doing research to find a place to set our adventure we wanted to pick an unusual location for a videogame... and there are not a lot of games set in Andorra :P -- then we saw this article about a project to build an observatory in Engolasters in a close future, so it was perfect! Plus Engolasters means "That swallows the stars," it was fate. We read about legends of witches bathing in the lake which helped shape de narrative and all.
So no special reason, it's like if Engolasters chosed us, and not otherwise ;)