Eyes of Idola, Part 2

This is Part 2. Here is Part 1 . Concept 1: Entering the Dungeon Descending the stairs into B1, the party reach rooms that are dark, crowded, flooded, and don't have any apparent ways out. Then after solving some simple training puzzle (for more complicated puzzles later), they open a door and enter B1. It's a crumbling stone bridge across a huge gap. The real floor is 20' below you. No visible…