Will you try on a Stack mask?

There is a simple law in the Skird tribe: don't cross the line. This means that only the tribesmen could see each other's faces. When they went outside the tribe, they hid their faces with masks and covered their heads with cloth.
 
For an outsider, looking at skird's unprotected face meant a choice. Either you become part of the tribe, or you die. The royal ambassadors tried three times to make a sustainable peace with the tribe and make their territories part of Ericuria. And all three times they returned blind — their eyes were burned out, but not killed. "You couldn't stand our faces," the leader replied to the last sentence.
 
When the Stacks were broken, the turbans and masks were removed from the dead. In Ericuria they were put in barns as trophies. They say that those who put on a mask for fun, after a month found a way to go to the steppe and never returned to the kingdom.