This is sort of old, and I'm sorry I don't have anything "new" to show, but I've been busy!
The GEMeni Megalith is only a rumor - surely nothing that large would ever be feasibly built by the mysterious and elusive GEMeni group? But if they did, why? Was the group, hell-bent on revenge for what the others did to their world in the Afterwar, trying to rebuild their own Seraphim, and stopped halfway? Is it a monument to their god of war? A golem of legend, brought to life with their new-found science and technology?
Yes, that is a TYPE-SIREN and person for scale