Which one, indeed? Was it possible to deduce anything about the piles from the outside? There were larger ones, smaller ones... one might have more people, but might have been more lethal.

"Unless we find a blood mage, I don't think we have a way to sense anyone. Not unless your magic can help us find spots with the most deceased, and hope that there's more survivors there as well." A morbid plan, and not the most accurate.

"I could also try to use astral projection to search beneath the rubble, before we move it... though it's not something I've had much practice with, yet."

"Or, failing that, we could simply pick one at random and hope for the best."