Trapdoor

Trapdoors are like doors, but horizontal. This mod not only adds normal type trapdoors, but even secret trapdoors, which look like a full block when viewed a top. This is really good for traps.

You can hold and right click on a normal trapdoor with a chisel to get the secret trapdoors.

Crafting
Hold and right click a normal trapdoor with a chisel to obtain the secret trapdoors.

Usage
Good for a "floor door", like when tunneling up or down with ladders, and you don't want any mobs to fall down or climb up.

Secret trapdoors are really good for traps, especially the ebony wood, since it's dark colored.

Trivia

 * The secret trapdoors where added when MCE accidentally forgot that trapdoors use their own texture and not a plank one. He saw it, and thought it looked good, and could be really good for traps, so he added the rest in.
 * Until snapshot 15w13a, you can not get the secret trapdoors. He got the idea to use a chisel and added the feature in.
 * If you use the WAILA mod, it shows up as the actual block. This will be changed so that you can actually have good traps.