In 1.4 (with Royalty and Ideology, no mods) and 1.4 (with Royalty, Ideology, and Biotech, no mods), it appears possible to roof over large steles. Rooms built around pre-generated claimed steles are able to be roofed and show as indoors.
In 1.4 (with Royalty and Ideology, no mods) and 1.4 (with Royalty, Ideology, and Biotech, no mods), it appears possible to roof over large steles. Rooms built around pre-generated claimed steles are able to be roofed and show as indoors.