An encounter where the center piece is a deep canyon with a river roaring through it. A rope bridge crosses this canyon, but it has a twist. The rope bridge is covered in ice. This will allow for a lot of interesting interactions. Additionally, you can stress the depth and dangers of the river below, which can make the battle even riskier. Be cautious of the level of your party for this one, as it is incredible easy to be knocked off and no one likes to die from one bad roll.