topic: heliographs


Each of the watchtowers that march alongside the roads of the Guarded Land is provided with a heliograph. This is a complex device consisting of a louvred panel of mirrored strips that can be angled and rotated to catch the rays of the sun so as to send messages to a neighbouring tower. Operated by the ammonites who staff each tower, messages can thus be jumped from one tower to the next back and forth […]