You discover two new exits (natural corridors leading northwest and northeast). Additionally you can see there are several excavated side tunnels branching off the minecart path down in the quarry.
The bottom of the quarry is flooded. The water is choked with algae and seaweed. From up here it smells foul and brackish. Somewhat incongruously, you see a shipwreck down in the water. It's a badly rotted wooden sailboat, about 25 feet long. Carc draws his master's attention to a parrot perched atop the mast.