Neji lifted a curious brow at the suggestion, mulling it over and attempting to gauge how useful such an exercise might be. Then he formed a few hand seals and spit out a large puddle of water next to their working area. It soaked a little into the ground, muddying the earth beneath.

"We could try," he offered. "Though without a fair amount of rocks to work with, we may just need to use dried mud and see how that holds up as we attempt to build it higher."

And that really would give them some idea of how thick the earth should be from bottom up.