Albrecht and Remi knelt at either end of the rows, watching through their night vision goggles for any sign of people coming. Occasionally they would switch to the infrared setting to see if they could pick up heat from a human being in any direction, then switch back to normal night vision. None of the three shone any light, and there was no sound except for the steady, faint summer breeze through the grapevine leaves and the slough of Sam’s shoes on the soft ground between the staked vines.

Sam moved methodically from the upper end of the crescent down toward the flat land. The crescent framed a loop made in the river where the channel curved and the water slowed. The alluvial soil had been deposited there before the river was diverted—highest at the midpoint of the curve and tapering on both ends.

Suddenly all of the metal detector’s readings changed. Sam saw the needle bury itself at the upper end. He moved a few steps and the needle dropped again. He came at it from the side and got a similar reading. He stood up straight and waved to the others, then knelt down. Remi and Albrecht came from their stations and knelt beside him.

“Is this it?” whispered Albrecht.

“It could be a lot of things,” Sam said. “All I know is that it’s metal and that it’s big.”

Remi rose and went to the end of the row, then came back with the spades. They began to dig, each moving apart from the others and digging quickly in the sandy soil. The work went steadily, and soon they were down about five feet, lifting each shovelful up above their shoulders to throw aside. Sam’s shovel rang out as it hit metal. A second later, Remi’s scraped a smooth, hard surface.

They set aside their spades and used their hands to clear the dirt off a metal plate. It was a flat rectangle, perhaps six feet long and three feet wide. Albrecht whispered, “There’s rust. The material is an impure form of iron. This could be the lid of the sarcophagus.”

“Let’s clear around it to get a better look,” Remi said.

Sam and Remi moved to the ends and began digging around the outside, so Albrecht began on the long side. They dug in silence, the suspense goading them to work harder and faster. But as they dug, each of them hit a second surface, just below the iron slab, that seemed to be stone.

Sam said, “Let’s see if we can budge it.”

All three stood at one side of the iron slab and used their spades to try to make it move. They strained, tried inserting the tips of their spades under the edge and pushing. The slab budged a fraction of an inch. “It moves. Let’s dig a space beside it and push the lid in it.”

They increased the size of the hole by three feet so that there was an empty space for the lid. They pushed again but made little progress. “Let’s try something else,” Sam said.