Bluebat cave
From Arindal Wiki
The Bluebat cave is the home of small bats, small blue bats and blue bats. The sustained cave reaches all the way from 6W 1N to 15W 1N, where the two main entrances are located. You can also enter the caves from the jungle 11 miles west of town center.
If you enter the caves you should watch your step, as the blue mushrooms growing here are poisonous and slightest touching results in them relaesing their spores. There´s also a small lake in this caves, but you shouldn´t come too close if you don´t want to get in contact with its inhabitants.
The cave is a popular way to the pirates, as fighting the bats is easier in the beginning than the journey through the jungle.
items: For 160 coins you may buy a mushroom blue shirt in a safe here.