Treeshroud Forest (Japanese: キザキのもり Tall Tree Forest) is a dungeon in Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness and Pokémon Mystery Dungeon: Explorers of Sky. It is unlocked upon returning to the present after clearing Deep Dusk Forest. It has 20 floors total. On the first visit, the player and partner are with Grovyle, therefore cannot recruit Pokémon here. Also, the dungeon cannot be revisited until after the credits. Subsequently, Pokémon here can be recruited.
There seems to be no connection to items and floor.
Along the way though this dungeon, players will encounter as many traps as they did in Deep Dusk Forest.