The Grand Maze Palladium (巨大迷路パラディアム, Kyodai Meiro Palladium) is a large maze located just across the way from Nikko Edomura.
To complete this challenging labyrinth you must stamp a card at each of the four towers, one at each corner of the maze, and then find the exit. It takes about 40 minutes to complete on average, and cold drinks are awarded to those that finish in less than 20 minutes. There are no bathrooms or vending machines once inside the maze.
Grand Maze Palladium is just across the street from Nikko Edomura.
Tobu operates buses between Kinugawa Onsen Station and Nikko Edomura. The trip takes 20 minutes, costs 410 yen one way, and buses depart every 20-30 minutes. They are covered by the Kinugawa Themepark Pass and the Marugoto Nikko Kinugawa Free Pass.
Additionally, a free shuttle bus operates between Nikko Edomura and Fujiya Kanko Center near Nikko's Toshogu Shrine. There are 4-5 round trips per day, but buses only operate on days when Edomura is open. The one way trip takes 35 minutes, and some buses stop at JR Nikko Station along the way.