slipping quickly into shadow as the sun started to dipbelow the peaks of the Mount Carmel ridge. Barely eighteen hundred feet at its highest point, the ridge is some thirteen miles long, and runs south-east from the Mediterranean coast near Haifa.
Bronson turned to Angela. 'Ready?' he asked.
'As ready as I'll ever be,' she replied.
Bronson lifted the rucksack out of the boot, opened it to make a swift check of its contents, then hefted it up on to his shoulders. He locked the car and they set off.
The main gate into the site would certainly be locked, but Bronson didn't think that would be a problem. A site as big as Har Megiddo was almost impossible to secure completely, and indeed parts of the site were protected only by low fences. In several places the steepness of the slope made any kind of a physical barrier pointless.
'This should do,' Bronson said, leading the way up a reasonably steep slope to the end of one of the fences. Earlier that afternoon he'd noticed a gap that he reckoned they could both squeeze through.
They reached the end of the fence. Angela went through the gap first, then Bronson passed the rucksack to her before following her through.
'Go straight to the entrance to the water tunnel,' he said, keeping his voice low, 'and watch your step on these rocks. Some of them are pretty crumbly and loose.'
He watched as she started making her way up the long and steep slope that rose to the top of the hill.
The site was deserted, and they walked quickly across to the open pit that marked the entrance to Ahab's Tunnel, and down the steps to the bottom of the shaft. The steel door was secured with a hefty padlock. Bronson put his rucksack on the ground and opened the flap at the top. Reaching inside, he pulled out a pair of collapsible boltcroppers, extended the handles and fitted the jaws around the hasp of the lock. He squeezed the handles together, grimacing with the effort, the muscles of his arms bulging with the strain. With a sudden crack, the steel parted and the ruined padlock tumbled to the ground.
'We're in,' he said. He replaced the bolt-croppers in his rucksack and opened the door.
'Creepy,' Angela whispered, as they stepped into the darkness. 'I hadn't imagined how much scarier an ancient place like this would be at night.'
'We can't turn on the lights in case they alert a guard.
We're going to have to rely on our torches.'
The two narrow beams helped. At least with the torches switched on they could see where they were going, but Angela was right – it was creepy. They were both very conscious of the weight of rock and earth above, and of the weight of history that surrounded them.
There was no point in looking for anything in the tunnel itself – the deciphered inscription had specifically mentioned a well or cistern. If the relic was still in the ruins, they'd find it in the spring itself, and nowhere else.
At the end of the tunnel there was an arrangement of steps and platforms, allowing visitors to get close to the well. They climbed down to the lowest one, just a couple of feet above the surface of the water. Bronson opened the rucksack again and pulled out a coil of rope. Swiftly, he tied one end of it around the steel handrail attached to the last section of the staircase then, as a precaution, also lashed it around the wooden balustrade that bordered the platform directly above the water. This meant that he'd be able to climb up and down the rope from the platform itself. Before he tossed the rope over the side to dangle in the waters of the spring, Bronson tied a series of knots in it, about a foot apart.
'What are they for?' Angela asked, shining the torch on Bronson's hands so he could see what he was doing.
'When I come out of the water I'll be cold – I wasn't kidding when I said it would probably be freezing in there – and my hands will be numb. The knots should give me something more to grip on when I climb up the rope.'
Swiftly, Bronson removed his shoes and socks, then stripped off his shirt, lightweight trousers and underwear.
Standing there naked in the gloom, he smiled briefly at Angela. Then, pulling a face-mask from his bag, he slipped the band around his head, then picked out a heavy black rubberized torch, bigger than the one he'd taken into Hezekiah's Tunnel.
'Can you pass me the torch once I get in the water? I daren't jump in because I don't know how deep it is or what rocks or other stuff there might be lurking under the surface.'
Angela leant forward suddenly and hugged him. 'Be careful, Chris,' she whispered.
Bronson swung his leg over the wooden balustrade, grabbed the dangling rope with both hands, and swiftly lowered himself down into the mouth of the cistern.
'Jesus, that's cold,' he muttered as he slid feet-first into the water. Holding on to the rope with one hand he adjusted his face-mask, then reached up for the torch.
Bronson first shone the beam all around him, checking the walls of the cistern, but they appeared to be fairly smooth and featureless. He glanced up at Angela, gave her a reassuring smile, and then lifted his legs to dive down into the dark water.
About three or four feet below the surface, Bronson gripped a protruding piece of rock to give him some stability and to stop him rising straight back to the surface.
The mouth of the spring was really too narrow to allow him to swim around, so he knew he'd have to keep on diving down and grabbing hold of something to keep him submerged while he searched the walls.
The good news was that the waterproof torch was working well, its beam illuminating the grey-brown rock that formed the walls of the spring. The bad news was that those walls appeared to be fairly smooth, with no convenient holes – natural or man-made – that could have been used to secrete anything.
He started searching carefully, holding the torch in his left hand as he circled the wall, moving from one handhold to another, then released his grip on the rock as he headed for the surface to take a breath.
'Anything?' Angela asked as he broke the surface.
Bronson shook his head, took another deep breath and dived down again. This time he went a little deeper, down to maybe six feet, but the result was the same. Solid greybrown rocks surrounded him.
Back at the surface, he lifted the mask from his face. 'I've been down about six feet,' he said, looking up at Angela, 'and there's nothing there. The people who hid the relic can't have dived down much deeper than that, could they?'
'I've no idea, but you're assuming that the water level in the spring was the same then as it is now, and it probably wasn't. If the level was, say, ten feet lower when they hid the relic, and they dived to six feet, it'll be sixteen feet below the surface now.'
'I never thought of that,' Bronson admitted. He nodded, replaced his mask and vanished again.
For the next twenty minutes he repeated the process, diving down, grabbing hold of something to keep him in place, and searching in vain for any kind of a hole or crevice in the rock walls. And every time he surfaced, he felt colder and more tired.
'I can't do this for much longer,' he said at last, his teeth chattering. 'Another three or four dives and that's it.'
'You've done your best, Chris. I never thought you'd have to go that deep to find it.'
'Nor did I,' Bronson said, replacing his mask. If it's here at all, he thought, as he plunged down again into the depths.
This time he powered down five or six feet below the depth he'd reached previously, grabbed another section of rock and looked around him. Far above he could see the dim circle of light that was the surface of the water in the spring, illuminated by the light from Angela's torch. And around him, the spring seemed to be opening up somewhat, the opposite wall barely visible in the light from his torch. It looked as if the spring was shaped like a bell, with a narrow throat at the top and widening considerably at his depth, which he guessed at about twenty or twenty-five feet.
Conscious that he could only stay submerged for perhaps another twenty seconds, Bronson turned his attention to the wall beside him. Unsurprisingly, it looked very much the same as all the other sections of wall he'd looked at so far. He changed position, pulling himself sideways to look at the next few feet, and then the next.
Nothing.
His lungs starting to protest, Bronson released his grip on the rock and allowed himself to start drifting
