The two details that the author leaves uncertain in the excerpt from "The Oval Portrait" are:
-
Why the chateau was abandoned - The text mentions that the chateau appeared to have been temporarily and very lately abandoned, but does not provide any details regarding the reason for its abandonment.
-
How the narrator was injured - The narrator refers to being in a "desperately wounded condition" but does not explain the cause or nature of the injury.
Therefore, the correct answers are:
- why the chateau was abandoned
- how the narrator was injured