When the dead man finally reached level ground, he collapsed and remained still for some time. The scene around him was one of utter desolation. The vestiges of a fortified gateway, whose blocks of stone had been too large and stubborn to remove, survived at the brink of the precipice where the crude thoroughfare had entered the former town, but looking towards the centre the only structures remaining above ground level were the ruins of houses, a small church, and opposite it an imposing fragment of walling framing an ornate doorway approached by five marble steps. All around lay heaps of rubble with weeds and small bushes growing out of them. The rounded paving stones of the main street were still clearly visible, however, and the dead man followed them, moaning with pain, until the cobbles opened out into a small piazza.

He then proceeded to the church, bowing his head and crossing himself on the threshold. Ten minutes passed before he emerged. He stopped for a moment to stare up at the massive remnants of stone frontage which dominated the square, then crossed over to the set of steps leading up to the gaping doorway, knelt down and slowly crawled up the steps on his knees, one by one, until he reached the uppermost. A wild fig tree had established itself in the charred wasteland within the former dwelling, feeding on some hidden source of water far below. The dead man bent over it and kissed one of its leaves, then bowed down until his forehead touched the slightly elevated doorstep.

The man watching from the ridge opposite put down his binoculars, lifted what looked like a bulky mobile phone off the dashboard of the Jeep Grand Cherokee beside him, extended the long recessed antenna and then pressed a button on the fascia. The resulting sound echoed about the walls of the valley for some time, but might easily have been mistaken for distant thunder.

A forkful of food stilled between the plate and his mouth, Zen sat watching the man at the next table.