The sun rose and with it a number of deliveries to the 'adventurers'. With a little working, the model of the city was completed in their room. Removing his earing, he set it in the centerpiece of the town as Tinkerhell spoke to her true master, the dungeonkeeper. Between the two they managed to project the scale model to the masters dragonheart. Not a direct transmission, which could be traced, but rather a pulse on the dragonheart frequency for it to most easily pick up. 

This image would give his employer some of the most detailed images possible, perhaps even enough detail for him to cast his own magics or set a portal to a location to feed the imps through. He wouldn't spill out any more details that might be picked up as obvious troop movements or the like in case it was intercepted. But for now he would wait for a return message from the keeper.