The Dream Den is a cave in Pikmin 2, and is one of the most difficult caves in the game. It is found in the Wistful Wild, in the far western ends. Due to the fact that it contains what may be regarded as the game's final , it is often the last cave completed. It is located to the far left of the landing site, across the lake and behind a poison gate there. All of the enemies in the way should be defeated and then Blue Pikmin should build a bridge across the water. Destroying the poison gate requires use of White Pikmin. The cave is one of the game's longest, with fourteen sublevels, and contains a variety of enemies in large quantities. In addition, many of the sublevels are filled with gas pipes and have sealed exits, so it is imperative that you keep White Pikmin alive for clearing the w