Banshee Boardwalk is the second course of the Lightning Cup in Mario Kart DS. It is very dark and haunted.
This course has many hazards. There a holes is the floor. Also, in a room there is a box of bats that fly at you. This course also lacks rails, so you can fall off.
In the second 'room' of the inside part of the track, there is a large hole in the floor with a pillar right next to one of its many corners. Aim just left of the pillar and it is very possible and practical to jump over the small gap next to the pillar (as long as you are still moving at good speed). This means you won't have to drift through the bats coming out in the same part. 3 Drifts can be executed to exit the inner part.