Marsh Cave B1
Marsh Cave B1, other than being a means to reach the deeper levels of the cave, is wholly unremarkable. There are two stair cases leading to Marsh Cave B2, one at the end of the northern branch of the floor, one at the southern end. If you are the type of person that has to collect every treasure chest and see all that there is to see, take the northern route first. If you want to collect the Crown and get out, head south.
2/5 Annoying Bat Rating™