I do not believe any of the available information about Duskwights in canon gives any reasoning behind their tattoos. However, Duskwights have a general paucity of available information in comparison to most other races and clans.
Given that they're unique to Duskwights, we can make the assumption that those specific tattoos are of some cultural significance to them. It could be a tradition that dates back to the days of Gelmorra that has died out among the Wildwoods but been maintained by their cave-dwelling cousins. The design- abstract and twisted- likely represents something. Unlikely that it's specific to families or subgroups of Duskwights, but is rather something that is more universal to them. Hypothetically, it could be seen as representing something like the roots of a tree, a crack in stone, or a rivulet of water.
But this is all speculation, keep in mind. There's no available information confirming one way or another just what the tattoos mean.
Given that they're unique to Duskwights, we can make the assumption that those specific tattoos are of some cultural significance to them. It could be a tradition that dates back to the days of Gelmorra that has died out among the Wildwoods but been maintained by their cave-dwelling cousins. The design- abstract and twisted- likely represents something. Unlikely that it's specific to families or subgroups of Duskwights, but is rather something that is more universal to them. Hypothetically, it could be seen as representing something like the roots of a tree, a crack in stone, or a rivulet of water.
But this is all speculation, keep in mind. There's no available information confirming one way or another just what the tattoos mean.
