The job of exploration fell to the United Nations’ International Heritage Agency. Nina, at the time the agency’s Director of Operations, had already been engaged in a project to chart in detail humanity’s expansion across the world in pre-history; the Indonesian find had the potential to pinpoint a date with great accuracy. It had taken several months for everything to be arranged, but now they were here.
And had made a discovery.
‘Nina, look at this!’ called Marco Gozzi over the radio. He and another scientist, Gregor Bobak, were using a vacuum pump to clear away the layers of sediment and vegetation that had built up over millennia.
‘What is it?’ Nina asked. She switched off the thrusters and swam the last few metres to join them: stirring up the bottom would wipe out visibility and cost them valuable time. The deep suits could operate underwater for longer than traditional scuba gear, but still had their limits - and on an operation like this, time was money. The research vessel anchored a few hundred metres away, the
Pianosa
, was privately owned, other clients waiting to use it after the IHA.
Gozzi aimed a light at what had been exposed. ‘It’s a net!’ said the Italian.
‘It is,’ Nina said in awed agreement. ‘Wow, this is incredible!’
Chase, hanging back, was less impressed. ‘Ooh. A net. Just like the thing that found this lot in the first place.’
‘
Eddie
,’ Nina chided. ‘This isn’t exactly a nylon drift net we’re talking about here.’ She reached out with a gloved hand, gently brushing sand off the crudely knotted strands. ‘Looks like they wove it from the local rainforest plants. Palm strands, maybe?’
‘Or vines,’ said Bobak in his strong Polish accent. ‘Strangler figs, perhaps. There are many on the islands.’
Gozzi dug a finger into the grey sediment. ‘The mud must have buried it and stopped it from rotting. Could have been caused by a tsunami, or a volcanic eruption.’
‘Mark the position,’ Nina told them. ‘If it’s a fishing net, they would have kept it close to the shore.’ She checked the little display in her helmet to get their exact depth. ‘Ninety-eight feet. If I put that into GLUG, I’ll be able to work out exactly how long ago this spot was last above water.’ She saw a yellow mesh bag on the ground nearby. ‘What else have you found?’
‘Stone tools, we think,’ Gozzi told her. He pointed to a spot behind Chase. ‘We found them there.’
Chase turned in place. An orange-painted stick marked where the other divers had been working. Near it, a little mound of round-edged stones stood out above the sea floor.
He looked back at Nina, who was using a smaller version of the vacuum pump to clear silt away from the net. Quickly becoming tired of watching her work, he swam to the stones, the deep suit’s neutral buoyancy letting him hover just above them. ‘Anything under these?’
‘I don’t know, we didn’t look,’ said Gozzi.
‘Mind if I do?’
‘Wait, you want to do some actual archaeology?’ Nina asked, amused. ‘I guess my influence is finally rubbing off on you.’
‘Nah, it’s just that if you’re going to keep oohing and aahing over a bit of old net, I’ll need something to keep me occupied. It gets boring just watching out for sharks.’
Bobak spun in alarm. ‘Sharks? Where are sharks?’
‘There aren’t any sharks, Gregor,’ said Nina as Gozzi suppressed a laugh. Still, Bobak surveyed the surrounding waters with deep apprehension before finally returning his attention to the find.
‘We have catalogued there,’ Gozzi said. ‘Go ahead.’
‘If you find anything, tell us,’ Nina added.
‘If it’s just some stone knife, then yeah, I’ll tell you,’ said Chase. ‘If it’s a pirate treasure chest, I’m keeping that to myself !’ Quickly scanning for sharks or other potentially dangerous marine life - despite his earlier jokiness, part of his job was to look after the rest of the team, a responsibility he took very seriously especially where Nina was concerned - he prodded at the nearest rock with his spear gun. Satisfied that a moray eel or similarly nasty surprise wasn’t going to spring out, he pulled the stone free of the sediment.
While the exposed end had been smoothed off, the rest of it was flat-faced and hard-edged, reminding him of a large brick. Putting it aside, he aimed a light into the new hole. It was sadly lacking in pirate treasure, or even stone knives: nothing but thick sediment and the chipped corners of more blocks.
He extracted another brick, which came stickily free of its home of untold centuries like a bad tooth from a gum. A couple of colourful fish came to investigate the resulting hole, but like Chase they too were disappointed to find only more bricks.
‘No treasure chest?’ Nina asked as he rejoined her.
‘Narr, me hearty. Didn’t find anything except some old bricks.’
Nina exchanged shocked glances with the other two archaeologists, then slowly faced Chase. ‘You found
what
?’
The brick sat on a table in Nina’s lab aboard the
Pianosa
. Slightly over a foot in length and about five inches to a side in cross-section, slightly curved, there seemed little remarkable about it.
Except for the mere fact of its existence.
‘It’s a
brick
,’ said Chase, not for the first time since Nina, Gozzi and Bobak had raced past him to the pile of stones. ‘What’s the big deal?’
‘I’ll tell you,’ said Nina, turning round the Apple laptop on which she had been frenziedly working to show him. On its screen was a map of part of Indonesia and the Java Sea, Sumatra and its myriad surrounding islands on the left side. ‘This is the sea level today, right?’
‘Okay. And?’
She zoomed in on one area. ‘This is us, here. The depth of the site is ninety-eight feet below sea level. But if I wind back time to show the last time the site was
above
sea level . . .’
The program she was using was called GLUG, for Global Levels of Underwater Geology - its full name contrived after the developers had come up with the jokey acronym. Using the most up-to-date radar and sonar maps, the program allowed members of the IHA and its sister agencies to see the topography of the entire planet, above or below the waves, with an accuracy previously only available to the best-equipped militaries. But GLUG could do more than simply show things as they were in the present: using data gleaned from geological and ice-core surveys, it could also raise or lower the sea level on a map to match that at any point in the past . . . or, by a simple reversal of the algorithm, list all the times when the sea had been at a specified level.
Which Nina had done. ‘This is what Indonesia looked like when the sea level was ninety-eight feet lower,’ she said. As Chase watched, the map changed, new islands springing up around the coast. She pointed at a yellow marker on the edge of one of the freshly revealed land masses. ‘See? That’s the dig site, right on the coast - sixty thousand years ago.’
Chase scratched at his thinning, close-cropped hair. ‘So? I thought that’s exactly what you were trying to prove, that early humans spread along the coastlines way back when. The whole Palaeolithic migration hypothesis thing.’
Nina gave him a surprised smile. ‘You’ve been reading my research?’
‘Hey, I don’t spend
all
my spare time watching action movies. Okay, so sixty thousand years ago, Ig and Ook used to live here, catching fish and making bricks. Isn’t that what you expected to find?’
‘More or less - except for
that
.’ She lifted the brick. ‘You know when the earliest known bricks date from?’
‘A week last Tuesday?’
She smiled. ‘Not quite. The earliest known fired bricks were found in Egypt, and dated from around three thousand BC. Even plain mud bricks only date from at most eight thousand BC. Kind of a gap between that and
fifty
-eight thousand BC.’
‘What if it’s more recent? Maybe it fell off a ship.’
‘You saw how rounded the exposed parts of the other bricks were. That’s not centuries of erosion, that’s millennia.’ She turned the anachronistic object over in her hands. Though battered, its surface still retained the vestiges of a glaze, suggesting a relatively advanced and aesthetically concerned maker. Neither concept fitted well with a Palaeolithic origin.
She put down the brick. ‘I think we need to expand the survey parameters.’
Chase raised his eyebrows. ‘Oh, you do, do you?’
‘Hey, I’m the Director of the IHA. It’s my job to decide these things.’
‘
Interim
Director,’ Chase reminded her. Nina had assumed the role four months earlier, following the death of her predecessor Hector Amoros, and the UN’s decision on the permanency of her appointment was pending. But it was a lock, she was sure; not bad for someone who had only turned thirty that year.
‘Whatever. But I still think we should do it. Proving a theory is one thing, but making a discovery that could change everything we thought about early man . . .’
Chase stepped behind her and wrapped his thick arms round her waist. ‘You just want to be on the cover of
Time
again, don’t you?’
‘No. Yes,’ she admitted. ‘But just think about what it would mean! Current theory believes that
Homo sapiens
didn’t develop anything but the most basic stone tools until the upper Palaeolithic period fifty thousand years ago, but if they had kilns able to bake bricks . . .’ She tailed off as Chase’s hands made their way up to her breasts. ‘Eddie, what are you doing?’
‘You get so turned on when you’re talking about archaeology,’ he said, a gap-toothed, lecherous smirk on his square face. ‘It’s like your version of porn. Your nipples pop up like grapes.’
‘I do
not
have grape nipples,’ Nina told him in a faux-frosty tone.
‘Well, they’re still nice and tasty. We could just nip - fnarr, fnarr - to our cabin . . .’
‘Maybe later, Eddie,’ she said, pulling his hands away. ‘Come on, I need to talk to Captain Branch and start a sonar survey.’
Chase rolled his eyes as she strode from the room. ‘Right. Because there’s nothing sexier than a sonar survey.’
Nina leaned against the railing on the
Pianosa
’s deck, watching the red and white de Havilland Otter floatplane nudge up to the L-shaped floating pontoon dock extending out from the ship’s starboard side. Chase waved at her from the co-pilot’s seat.
She waved back, then headed for her lab. It had taken some time to persuade Captain Branch - a stickler for adhering to the exact letter of a contract, nothing more, nothing less - to allow the floatplane to be used for anything other than its agreed purpose of bringing in fresh food from Jakarta over the course of the ten-day expedition. But she eventually got her way . . . with the promise of some extra money from the discretionary budget going
his
way.
The Otter had been outfitted with a small ‘dunking’ sonar array, then spent the next few hours making short hops along a rough spiral course out from the ship. At each landing, Chase lowered the sonar into the water to scan the surrounding sea bed. In theory, if any of the results matched the reading from the dig site, there was a good chance they would find more of the mysterious bricks, perhaps even their source.
In theory. There was an equal chance that the search would uncover absolutely nothing.
Chase entered, carrying the tubular sonar array. Behind him, holding the sonar’s data recorder, was Bejo, one of the Indonesian members of the crew. He was still in his late teens, and growing up on one of the vast archipelago’s many islands meant that he had spent almost as much of his life in boats as on land.
‘How was the trip?’ Nina asked as Chase returned the sonar to its large metal box.
‘Pretty good. Hervé even let me hold the controls. For about a minute.’
‘I
thought
I heard terrified screams,’ Nina joked as Bejo put the recorder on a table. ‘Thanks, Bejo.’
‘No problem, Mrs Nina,’ Bejo said cheerily.
‘Please, I told you,’ she said as she connected the recorder to one of the lab’s computers, ‘I’m not “Mrs” anything. Not until next May, anyway.’
‘Ah! I see, then you will be Mrs Eddie?’
‘No, nonono.’ Nina wagged a finger. ‘Then
he’ll
be Mr Nina.’
Bejo erupted with laughter. ‘Mr Nina!’ he cried, pointing at Chase. ‘I like that, that is funny.’
‘Yeah, hilarious,’ Chase rumbled. He joined Nina at the computer. ‘See you later, Bejo.’
‘And you . . . Mr Nina!’ Bejo left the lab, his laughter echoing down the corridor.
‘Cheers for that,’ said Chase, batting Nina lightly on the back of her head. ‘Now I’m going to be “Mr Nina” for the rest of the bloody trip.’
‘Ah, you don’t mind really. Because you
lurve
me.’ She nudged him playfully with her hip.
‘Yeah, I need to get my head checked sometime. So what’ve we got?’
Nina was already working. ‘Let’s see, shall we? Okay, this is the dig site.’ An image appeared on the screen, blobs in various shades of grey against a black background. ‘It’s a composite of four readings - only objects that stay stationary in all four show up, so we don’t have to worry about fish confusing things.’ She zoomed in and indicated one particular group of objects. ‘These are the bricks you found.’