In this sentence:
つまりアレだ、俺が自らあのばーさんとこまでの道を作り出しちまったってことか?
I guess it's something like:
It's that thing right? I created a path that leads to that old hag?
What part would ってことか represent here?
In this sentence:
つまりアレだ、俺が自らあのばーさんとこまでの道を作り出しちまったってことか?
I guess it's something like:
It's that thing right? I created a path that leads to that old hag?
What part would ってことか represent here?
つまりアレだ、俺が[自]{みずか}らあのばーさんとこまでの道を作り出しちまったってことか?
(つまり)~~ってことか means (つまり)~~ということか, "(So,) does it mean...?" (Compare: 「~ってことだ」=「~ということだ」= "That means...")
For more examples, see Weblio 例文集「つまり ということですか」