Wooden Trapdoor

A lockable lid for hatches

Of the trapdoors in ARK: Survival Evolved and ARK: Survival Ascended, the Wooden Trapdoor is the most basic, according to the ARK Wiki. A trapdoor seals a structure's entrance against the elements and can be locked. The game's description: "This small wooden door can be used to secure hatches."

Placing and locking it

It fits only inside a Hatchframe. Once in place it can be locked or unlocked, keeping others out of the structure while tribemates still pass. The wiki also notes that trapdoors make no difference to a house's insulation, whether open, closed or missing altogether.

Engram, recipe and weight

The engram needs level 13 and 6 engram points. The trapdoor is crafted in the player's inventory from 20 Wood (Fungal Wood also works), 7 Thatch and 4 Fiber, and a craft takes 3 seconds. Each one weighs 4, and a full stack of 100 weighs 400.

Loot and resistance

Our records count 50 crate types that can contain it, for example Fjordur Green, Fjordur Green Bonus and several Genesis crates on Genesis Part 2. It counts as a wooden structure and cannot be hurt by bare hands, stone weapons or ranged attacks that do not explode. The wiki also lists aggressive creatures that cannot damage it, among them the Sabertooth, Raptor, Direwolf, Kaprosuchus, Titanoboa and Pulmonoscorpius.