location. There are newspaper clippings concerning it, various bits of documentation. The locals have an immemorial dislike for it. In 1966 a couple of cavers took it on. It was summer and the tributary was running dry at the time. Four hours after they started in there was a flash flood up in the mountains. One body was washed out, the other lost forever. And these were experts.'
'And they were walking and swimming,' said Harry. 'I won't be.'
'Eh?'
'I said I was going up to the watercourse, but I didn't say how.'
Clarke gasped, 'You'll use the Mobius Continuum?'
'Of course.'
'Then why the wet-suit, aqualung and all?'
'Just in case.'
Clarke fell silent for a moment, then said: 'I was only trying to help.'
'And I appreciate it,' Harry told him. 'But I know my own business best.'
Ten minutes later he took up his gear in a waterproof kit-bag and went to Radujevac. From the outskirts of the town he caught a taxi into the countryside close to the location Clarke had given him. He paid his driver with money from the same source. With his bag over his shoulder he set off down a country track, eventually arriving at his destination. It was a wild place and there was no one around. Harry dumped his kit in a copse and covered the bag with dead branches, then returned to the site of the resurgence.
It was in the base of a cliff, overgrown with ivy, where limestone outcrops glistened with moisture. To the north-east stood the grey, forbidding Carpathians, and to the south sloping wooded countryside. Harry stood on the banks of the pool under the cliffs and looked again at the mountains, then down at the dark water where it gurgled into view from untold caverns of gloom. It issued from the mouth of a cave. This was the spot where Old Belos of the Wamphyri first entered our world. And others like him. And between here and those legendary mountains, somewhere underground, lay a gateway to an alien world. Now it was Harry's task to pin-point that Gate as accurately as possible before setting out up the river to find it.
He checked again that there was no one around, no one to see him take his departure. The place was silent, wooded, where only the birds sang and the cold water gurgled. But this time Harry was well muffled-up and didn't feel the cold.
He picked a spot in the foothills to the north-east, went there via the Mobius Continuum. The door from which he exited was the same as always: a 'hole' in the universe, with nothing to distinguish it from hundreds of other doors Harry had used. Harry moved again, even closer to the looming peaks. But this time when he emerged, the 'edges' of his door shimmered a little. It was the warning he'd been looking for, which told him he was close.
Very close, Harry, said a dead voice in his mind, surprising him. It felt like someone had come up close behind him and whispered in his ear.
'Do I know you?' He scanned the countryside around,' looked down on distant towns, Radujevac, Cujmir, Recea. They were smoky, wintry smudges on his horizon.
No, but I know you. Your mother has been making enquiries on your behalf.
Harry sighed. 'She means well,' he said. 'Has she disturbed you?'
Not at all. I'm happy to help. You intend to travel the length of the Radujevac resurgence, right? The voice was full of excitement, eagerness. Which was what gave its owner away.
'You were a caver,' said Harry. 'You died back in the summer of 1966, somewhere up that underground river.'
That's me, said the other, a little sadly. And I never did get to finish the job. My name is Gari Nadiscu, and if I'd made it the bore would have been named after me: the Nadiscu Route. It was a dream. Maybe you can finish it for me?
Harry said: 'Wait,' and transferred to the Mobius Continuum. 'Now talk to me,' he said. 'I want to get closer to you.' He followed the other's thoughts, emerged at the very foot of the mountains. And again the Mobius door shimmered, more than before, confirming Harry's belief that he was moving closer to the gate.
'You didn't do badly,' he told Nadiscu. 'You covered, oh, maybe nine miles before that flood hit you! Are you still down there?' He glanced at the stony mountain soil under his feet. 'I mean, is there anything left… you know? How did you get trapped? Your companion was washed out.'
Trapped, answered the other, grimly. That's the right word, Harry. I crawled onto a ledge. There was a crack in the wall. As the water rose I climbed deeper into the crack. Finally I got jammed, couldn't move. I was wearing a lung, of course. It was a bad time. I lasted as long as my air…
That must have been pretty terrible,' Harry commiserated. But:
Don't waste time on that, said the other. You've things to do. How can I help you?
Two things,' said Harry. 'One: what was the course of the river up to the time you… when the flood came? And two: how deep are you, as you calculate it, under the surface?'
Nadiscu supplied the answers and Harry thanked him. 'I won't be looking for the river's source,' he admitted, 'for it's a different kind of source that interests me. But if it all works out I'll come back some time and tell you how far I got. OK?'
Thanks, Harry. I'd appreciate that.
Harry used the Continuum and moved on into the mountains, exiting on a steep, pine-covered slope. This time the interference was such that Harry knew he was almost there. Directly below him, at some great depth in the roots of the mountains, the Gate to the world of the Wamphyri was waiting for him.
He calculated the distance to his starting point, fixed his location firmly in his head — his location not only in the mundane world but also in the metaphysical Mobius Continuum. It was a sort of mental triangulation. And then he went back to the copse where he'd hidden his gear.
Half an hour later, dressed in wet-suit and aqualung, equipped with fins and a powerful waterproof torch, Harry slipped into the water and conjured a Mobius door. No shimmer here. He moved upstream, emerging in darkness with his flippered feet on a pebbly bed. The darkness was absolute and there was a current strong enough to cause Harry to lean against it. He used his torch to scan the way ahead, its powerful beam cutting the dark like a knife. On the next jump his feet were still on the bottom but the bore had narrowed down, the water was chin- deep, the way ahead convoluted.
And so Harry proceeded.
Sometimes he swam; at other times he was underwater, where there was no gap between ceiling and river; occasionally the bore was wide as a cathedral and the water shallow. Almost before he knew it he found Gari Nadiscu in the crevice where he'd trapped himself. There was very little of him left: a single flipper and an air tank half-buried in shingle, and a trapped thigh bone.
Harry could have come to Nadiscu direct, he saw that now, but there could have been hazards. The caver had been trapped in a tight spot; Harry hadn't wanted to emerge in a cramped, difficult location. Also, and more importantly, Nadiscu might have been too close to the Gate. Harry had experienced the danger in using the Mobius Continuum close to a Gate; it was to be avoided. No, he'd preferred his own way. If there'd been difficulties, getting out again would have been as easy as conjuring a Mobius door. And this way he'd got used to his system of sighting the way ahead and then jumping there. Which was as well, for beyond this point the route was totally unknown.
Now: he and Nadiscu exchanged a few encouraging words, and Harry moved on.
Five minutes later, after a series of short jumps, Harry's exit door shimmered violently and seemed to bend back on itself. Harry emerged in deep water, swimming. He shone his torch ahead. The bore was almost circular, with maybe twelve inches between ceiling and water. He daren't use the Continuum again and so put all of his efforts to swimming. The current wasn't much but still it made for hard work.
Then, ahead, Harry saw a faintly luminous arc of light. He switched off his torch and hooked it to his belt, using both hands to aid his flippered feet in forging ahead. The arc expanded and the light grew stronger. White light!
Harry emerged into the cave of the sphere and gratefully hauled himself up onto the ledge — where he at once recoiled from what lay upon the moist floor! It was a headless corpse, running rapidly to decay. The head, also sloughing flesh, lay some little way along the ledge. 'Jesus!' Harry breathed. He had taken off his demand-valve attachment but now quickly replaced it to breathe bottled air. That was better. Then he examined the corpse more
