Un château sous la mer

From Author Wars - https://authorwars.com/books/un-chateau-sous-la-mer-2966884.html

Overview:

Title: Un château sous la mer
Author: Greg Egan
Year: 2021
Type: Short Fiction

Editions/Publications:

2021 . Une heure-lumière hors-série 2021 (2021, Greg Egan, Le Bélial', ISBN-10: 3269900000382, 112 pages, Paperback, Chapter Book)