According to Genesis, what was the Ark's opening covered with?

According to Genesis, Noah’s Ark had an opening covered with a covering.

Genesis 6:16 describes the ark as having an opening or window-like feature and says that Noah was to finish it to a cubit above. Later, Genesis 8:13 says Noah removed the covering of the ark and saw that the surface of the ground was drying. The text therefore distinguishes the opening from the covering removed later in the story.

English translations vary in how they render the relevant Hebrew terms and details. Some speak of a window, some of an opening, and the covering may be understood as a roof-like cover or outer covering. The safest canonical answer to the specific wording is simply “a covering,” because that is the object Genesis explicitly says Noah removed.

This detail is sometimes confused with the ark’s door, which Genesis also mentions. The passage presents separate features: a door at the side, an opening, and a covering.