Excavation Site Permit
From the Super Mario Wiki, the Mario encyclopedia
The Excavation Site Permit is an item in Paper Mario: Color Splash. It is required to have a permit to go to the excavation site in Marmalade Valley. Prof. Kinopio gives it to Mario after he leaves Mondo Woods to go back to Château Chanterelle. After Mario obtains the permit, he can access the rest of Marmalade Valley.