‘Only this.’ Jack clicked the mouse to send the scanned photo of the airman in the raft. ‘This is Flight Sergeant Brown, the sole survivor of the Liberator crash. The markings on the pontoon, the slashes and the line of numbers below his head, were made with his own blood.’ He saw Lanowski peer intently at the screen for a few moments, then work the keys and turn away before looking back at him.
‘I’m trying to sharpen it up,’ Lanowski said. ‘I want to see what he’s written.’
Jack stared at the photo as it repixellated, seeing the numbers clearly now: 242446, 742799, repeated exactly below. He suddenly remembered his flight in the RAF Tornado three days before, something Paul Llewelyn had told him once about wartime Coastal Command training. That was what he remembered from the visit with his father to the RAF museum. When aircraft were about to ditch into the sea, the pilots were trained to give a position fix over the intercom to ensure that the crew knew their co-ordinates and could relay them from their rafts if they survived and the pilot and navigator did not. The pilot would repeat the coordinates, over and over again. Jack’s heart suddenly began to pound. Of course. ‘Jacob, run that line of numbers as geographical co-ordinates.’
‘I’m there already, Jack. Translate that into degrees, minutes and seconds, and you have a point almost due north-east of San Salvador Island, about thirteen and a half nautical miles offshore. It’s bang on that ridge, just before it drops off into the abyss.’
Jack tensed with excitement. ‘Mikhail says there’s no detailed bathymetry available because this was a military exclusion zone, but can you get a satellite view? What we’re looking for might be visible from the air.’
‘I’ve got Landsat imagery streaming online now. Click on the link I’ve just sent.’ Jack stared, waiting for it to appear. He looked up for a moment from the monitor and saw the dawn sky through the windows. The dogs suddenly barked and he heard a steady beeping sound, evidently the propane tanker reversing down the lane towards the house. Mikhail appeared up the stairs, quickly made his way to the table and picked up the Lee-Enfield and a box of. 303 cartridges. ‘The licence plate of the truck checks out,’ he said. ‘It looks like the usual two guys in the cab. Jeremy’s going to meet them and keep an eye on things. Rebecca seems to be turning her shower into a sauna. Any luck?’
Jack gave him a thumbs-up sign. ‘Touch wood. We might well be on to something.’
‘Okay. I’m off to do my usual morning recce around the treeline. I’ll be less than half an hour.’
An icon flashed on the screen and Jack clicked on it, opening up a Landsat view of a sector of sea. The focus co-ordinates were the same numbers the airman had written on the pontoon of the boat. He clicked the mouse to zoom in on a line of white on the sea, evidently breakers over the edge of a reef, with deep azure waters to the right and lighter blue to the left. The target co-ordinates lay on the reef, at a spot indistinguishable in colour from the surrounding water. He zoomed in closer and saw a ripple on the surface, and realized that a wind was obscuring the view he would have had in calm conditions through the shallows to the bed of the reef. He looked at the webcam. ‘Jacob, can we do anything about that wind?’
‘I’m searching for an archive photo in calmer seas. Okay, here we go.’
After a short delay, the image transformed. The line of breakers disappeared, and the distinction in colour between the reef and the deep water became more sharply delineated. ‘That drop-off must be awesome,’ Jack murmured. ‘A mile straight down into the abyss.’ He stared at the target co-ordinates, about five hundred metres into the reef from the abyss wall. Dark and light patches showed undulations in the reef depth. He estimated the underwater visibility at perhaps thirty metres, with the darker patches showing sea floor at about that depth or greater and the lighter areas no more than ten or fifteen metres deep. The arrow showing the target co-ordinates lay over a slightly darker circular patch perhaps two hundred metres across between two very light areas two or three times that size. He clicked to maximum zoom, looking down at the sea as if he were three hundred feet overhead, about the altitude from which the Liberator gunners might have seen it during an attack run. He tried to contain his disappointment. He remembered years before flying a helicopter over blue holes when the first Seaquest had sailed to the Caribbean. The holes were absolutely distinctive, deep blue circular patches in the reef, indigo against the aquamarine of the surrounding shallows. ‘I don’t think that dark patch is clear enough to be a blue hole.’
‘Wrong,’ Lanowski replied.
‘What?’
‘Wrong.’ Lanowski’s face appeared on the screen, flushed with excitement and shaking. ‘Wrong, wrong, wrong.’
Jack saw Costas’ hand clamp down on Lanowski’s arm. ‘Okay, Jacob,’ he said. ‘Slow down. Explain.’
Lanowski tried to raise his arm, and seemed to shudder. His voice was hoarse with excitement. ‘Blue holes are collapsed caverns, right? Caverns have roofs. A lot of blue holes have rims remaining that overhang the edge of the hole, and those can collapse too. What happens when a U-boat dives into a blue hole followed by three depth charges totalling, what, two tons of high explosive? Bang.’ He chuckled, shaking his head. ‘And I mean bang. The U-boat sinks. The rim of the blue hole collapses. What we’re looking at here is not what Squadron Leader White or Flight Sergeant Brown saw as the Liberator went in for the attack. What we’re looking at is the blue hole after the equivalent of a small earthquake, its appearance after the Liberator had done its work.’
Jack stared at the satellite picture. The depression in the reef was uniformly round, distinct from the irregular mottled patches indicating undulations in the reef depth around it. ‘I have to say it, Jacob, you’re a genius,’ he murmured.
‘I know,’ Lanowski replied, chuckling and shaking his head. ‘ I know.’
Jack paused, thinking hard. ‘If we’re right, then this is also where the Ahnenerbe archaeologists in 1936 discovered the Atlantis symbols we saw in Wewelsburg Castle. Jacob, can you use that terraform programme to give me a picture of the reef at this spot seven and a half thousand years ago?’
‘You mean at the time of the Black Sea flood?’
‘I mean the time when a shaman of Atlantis fleeing the flood might have made his way into the Mediterranean and across the Atlantic, and then found a landfall in the Caribbean.’
‘Okay.’ Jack heard the rapid tapping of keys. ‘We have a tree-ring date of 5545 BC on those freshly felled logs you found in the timber yard at Atlantis five years ago,’ Lanowski said. ‘Let me feed that date into the program.’ He paused. ‘Today there’s nothing in the entire Bahamas chain higher than sixty metres above sea level. That’s why I was interested in those abyssal megaturbitides, the layers of silt. Not only have you got sea-level rise since the Ice Age, you’ve also got massive erosion of surface land mass, especially in an area that’s often hit by hurricanes. I think Macleod’s probes would find thick layers of coral debris at the bottom of those cliffs.’ He paused again, and Jack watched him scan the screen below the camera. ‘Okay,’ he continued. ‘I’m looking at the eustatic sea-level curve since the last glacial maximum. We’ve got an average of about one hundred metres’ rise in sea level from Meltwater Pulse 1A, about fourteen thousand years ago. 5545 BC falls just before the trigger event that happened about seven thousand years ago, a final big melt that brought the sea level close to its present state. Since 5545 BC we’re looking at around a thirty-metre rise. Add the effects of erosion, maybe another twenty to thirty metres in places, and you’ve got land at this point rising fifty or sixty metres high, with peaks as high as a hundred metres.’
‘Not exactly the mountain the fleeing priests were looking for,’ Costas murmured.
‘No,’ Jack said. ‘But imagine looking at a coastline in a storm with no way to gauge scale. A modest elevation could seem like a mountain. And remember, the only description we have is from the man who returned, the one Pliny recorded from the pillar at Lixus as Alkaios, who we know was Enlil-Gilgamesh. He himself may only have seen the shoreline in the distance, perhaps deterred from going closer by a storm, or perhaps because he had only ever intended to accompany Noah-Uta-napishtim to the point where the prophesied destination was visible: where he knew Noah would go on and disappear from history, but where he, Enlil-Gilgamesh, would carry out his secret plan all along of turning back to make a triumphant return to Lixus as a hero and a god.’