The Flag of Underath

The Flag of Underath has a yellow background with Quinland's coat of arms on it. A white shield with a red cross and a knight's helmet on top. On the right and left it has a black pattern and on top, written with red, calligraphic letters one can read "Long Live The King"

Signals that the territory you approach is Underathian

A rectangular piece of cloth, A pole, perhaps, Colours.