“What is it?” Don yelled down.

“There are initials carved on the oak timber here. ALR.”

“Uncle Albert, I bet,” Don said. “I think his middle name is Lewis.”

“Next to it is Dad’s JGR, and it looks like TMD.”

“That’ll be Mr. Davis. He worked with them when they tried to reach the bottom.”

“Okay, lower away.”

Nick turned on his miner’s lamp at forty feet where the wooden supports gave way to native rock. The stone looked natural, as if the shaft had been formed millions of years ago when the island was created, and was damp enough to support slimy green mold even though it was well above the tide line. He cast the beam past his dangling legs. It was swallowed by the abyss just a few yards beyond his feet. A steady breeze blew past Nick’s face, and a single uncontrollable shiver shook his body.

Down he went, deeper into the earth, with nothing to support him but a rope and his faith in his brothers. When he looked up, the sky was just a tiny square dot high overhead. The walls weren’t exactly closing in on him, but he could feel their proximity. He tried not to think about it. Suddenly, below him, he could see a reflection, and as he sank lower he realized he’d reached the high-tide mark. The stone was still damp to the touch. By his calculations he was a hundred and seventy feet belowground. There was still no sign of any way water could reach the pit from the sea, but he didn’t expect to see it until the two-hundred-foot mark.

Ten feet lower, he thought he heard something—the faintest trickle of water. He gave the plumb line two tugs to tell his brothers to slow his descent. They immediately responded, and his speed was halved. The sound of water entering the pit grew louder. Nick strained to see into the darkness while droplets dripped off the walls, pattering his helmet like rain. An occasional drop was an icy flick against his neck.

There!

He waited a few more seconds to be lowered another eighteen inches, then gave the plumb a sharp pull.

He hung loose next to a fissure in the rock the size of a postcard. He couldn’t estimate how much water was coming through it—surely not enough to defeat all the pumps his father and uncles had brought—so he decided there was at least one more channel to the Pacific. He carefully pulled a handful of oakum fibers from his bag and shoved them into the crack as deep as he could, holding them in place against the icy flow. As seawater saturated the fibers, they swelled until the surge dwindled to a drip and then stopped altogether.

The oakum plug wouldn’t hold for long once the tide came back in, which was why his time on the bottom would be so short.

Nick tugged again and started down once more, passing clusters of mussels clinging to the rock. The smell was noxious. He plugged two more similar-sized clefts and when the third was dammed completely he could no longer hear water entering the pit. He pulled the plumb four times, and a moment later the flaccid hose attached to the surface pump puffed out as it started to suck the shaft dry.