I would say anxious, shocked, and concerned.
Some examples from the passage are..
"...with another bound of terror..."
"...from where I was then standing horror-struck."
"How was this to be explained?"
Revealed. Dig up. I prefer Reveal though..
A wall lol if that why you asking?
Answer:
you don't give me question so I am not sure
Answer: here your answer
Explanation: Providing evidence as part of your arguments in a discussion helps your statements and claims to be more than opinions, but instead, such arguments are turned into facts, that can not be debated and can help you support the way you present your ideas in a discussion.