The excavation process entails trenching around blocks of stone containing the fossils and digging under them, leaving temporary pedestals for support.
E'en his face begetteth laughter, And he speaks truth free from slaughter; He's the grace of every feast, And sometimes the chiefest guest; Hath his trencher and his stool.
My guess is that they just, they've been doing it so long that they're like an animal that's just been, you know, digging a trench in its zoo confined cage.
'Hedgers and ditchers by rights. But once in ancient times one of 'em, when he was at work, changed clothes with King Charles the Second, and saved the king's life.
When the appetites of the whole were appeased, the squaws removed the trenchers and gourds, and the two parties began to prepare themselves for a subtle trial of their wits.
First they dug trenches around the fields to siphon off the water, but the soil beneath was still too wet to grow crops, so they added these underground tubes with holes in the top.