Our heroes backtrack through areas 6, 5, 4 and cross the border into Dungeon Level 1.
They are immediately met with a T intersection. The tunnel forks west and east. Both the west and east tunnels stretch at least 30' into the darkness beyond lantern light. There are no unusual sounds or odors.
OOC: Dungeon level 2 wandering monster 1d6=3, no encounter. Dungeon level 1 wandering monster 1d6=2, no encounter.
Here is a map showing how Dungeon Levels 1 and 2 fit together: https://photos.app.goo.gl/Yhr8A1dmHfwCeD9u6