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.