Observation Window

The Observation Window is a treasure in Pikmin: Revenge of the Darkfreeze. It is actually a telescope. To obtain the item, you must obtain Purple Pikmin first, as the weight is too much for Red Pikmin alone. Defeat the two Dwarf Blue Bulborbs and take the Observation Window.

Area Locator
The Observation Window is part of the Adventurer Kit. Unlocking the Area Locator unlocks the Forest of Peace.