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. Pokémon are recruitable in this dungeon after the credits have rolled.
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.
The last floor, where the Time Gear is located