What type of punctuation does one use at the end of an indirect question?

idk

explanation:

- "the die is cast; i have consented to return if we are not destroyed. thus are my hopes blasted by cowardice and indecision; i come back ignorant and disappointed. it requires more philosophy than i possess to bear this injustice with patience. i have lost my hopes of utility and glory; i have lost my friend."

"the sandy walls seemed to collapse in on themselves"

and

"the bloodshot waters seemed to have no bottom"

you can't answer this. more information is needed.