My players are going to be infiltrating a land lighthouse (same purpose, just as land) that sits on the opening of the only large pass on the south end of the Trielta Hills. In my game, the Zhentarium have militarized, taken over this landlight compound as a forward operating base, and are actively setting up a seige cannon. My players will be tasked with infiltrating, gathering intel, sabotaging the cannon, and maybe helping out the prisoners/slaves - quietly. If they are discovered, a red lantern will be run up the tower signalling the army outside of the camp something is wrong. This is based on old coastal warning towers where weather flags and lanterns would be used along side light houses to signal various hazards. In my game, it is used to signal if the pass is open/closed and weather. For this game, its a threat to the players. Need to add pigments, washes, and details to the tower, as well as finish the base.