Ah. Well, chances are there's more than one location, though if it's a recurring problem, you could jump into creative, give the problem bedrock a smack and then go back to normal.
Then again, depending on the pack there might be options. Rotarycraft can destroy bedrock, allowing access. On the other hand, if you can see it enough to know it's there, a transvector interface from Thaumic Tinkerer might be able to let you harvest it as if it were the block itself. MFFS, or Blood Magic have the ability to move blocks, though it takes a bit of effort, and could be difficult.