Arx on the moon Staff Reports 25/10/2008 Ladonia has two colonies on the moon. In the Mare Vaporum Colony (13,0 NL, 9,7 EL) our ladonauts have built a copy of Arx, the stone and concrete book in Ladonia. Ladonaut in the moon colony with Arx (Photo: James Hartman) Related Articles Bureau of Tribal Affairs Production in Ladonia Colony in Säter, Sweden