This article or section relates to the areas or caves of the non-canon Pikmin game Pikmin: Colonies, created and managed by Michaelb958.
This is the Pikmin: Colonies guide page listing all the areas of the game. Here they are:
The first area outside of the safe area that the player can venture into, The Monument is also completely safe from enemies. At the center of this area is... yup, The Impact Site from Pikmin 1.