“I believe you’ve hit it. Well, there’s a gate open, so I suppose there’s no harm in our having a peep inside.”

“Suppose some one were on the watch, and were to pop round and close and lock the gates when we were inside and out of sight,” said Leonard suspiciously. “Monella warned us to be wary and to suspect traps.”

“We have our revolvers; and, if the worse came to the worst, we could climb over these rocks.”

In the result they went inside; then made their way to a wide terrace that ran round an extensive area of horseshoe shape, half natural, half artificial, as they judged. This terrace extended several hundreds of yards in both directions from the point at which they stood; but it narrowed off considerably on one side of the horseshoe. Above and behind it, cut out of the rock, were other terraces, like steps or rows of seats, but broad below and narrowing as they got higher. These went all round, almost to the top of the rocks. It was, in fact, a vast amphitheatre where many thousands of people could stand or sit. At the farther end it was open; and in the centre was a large arena sunk some fifteen feet below the main terrace on which they stood.

This arena opened out into a deep defile beyond, from the rocky heights of which there issued a rushing stream of water that flowed into a large, dark-looking pool below.

But what at once riveted their attention, almost to the point of fascination, was an extraordinary-looking tree that stood in the arena. This tree had no leaves, but branches only. In colour it was of a sombre violet-blue, tinged in places with a ruddy hue. The trunk was about thirty feet in height, and eight or nine feet in diameter. The branches, which were many—a hundred or more probably—drooped over from where the trunk ended and trailed about the ground. But what was most astonishing, these branches were all in motion. Though there was no wind, they waved to and fro, ran restlessly along the ground like lithe snakes, and intertwined one with another, at the same time making a harsh, rustling sound.

Straight in front of where they stood was a long pier of masonry that ran out towards the tree, which was not in the centre of the arena but was nearer to that part of the terrace where it grew narrow. In order the better to observe the object that had so roused their curiosity, the two young men walked across the terrace and some distance along the pier; and, when they had proceeded a little more than half its length, one of the long trailing branches—some of them appeared to be two hundred or three hundred feet in length—came up over the end of the pier, and, with a rustle, made its way swiftly towards them. It was within two or three feet of where they stood looking at it, when the puma, with a loud growl, sprang forward and bit at it. Immediately the branch curled itself round the animal’s body and began dragging it along the pier towards the tree. Then two or three other branches advanced and went to the assistance of the first one, coiling round the poor puma and dragging it farther along, despite its teeth and claws and its desperate struggles. In succession, other branches crept up over the end of the stonework, and, just in time, Jack seized Leonard and dragged him back.

“For Heaven’s sake come away, man!” he exclaimed in horror. “That tree is alive, and will drag us off, if once one of those branches touch us!”

They had stepped back only barely in time, for a moment after a trailing branch swept over the very spot on which they had halted. When assured that they were really out of reach, they stood fascinated, but filled with horror, while they witnessed the unavailing fight made by the poor animal that had saved their lives. More branches came to the aid of the others; they coiled round its mouth and closed it; round its legs and bound them; and soon, helpless, a mere bundle in the coiling, curling branches, as it were, it was drawn off the pier to the ground below. Then it was rolled on and on till it had almost reached the tree-trunk, where were shorter but thicker and stronger branches waiting for it. These, in their turn, soon coiled round it; then, slowly, they bent upwards, carrying the poor animal in their relentless grasp, and lowered it into a hollow in the centre of the top of the trunk, where it almost disappeared from sight. Then all the thicker branches coiled round it and shut it completely out from view, forming a sort of huge knot round the top of the tree and remaining motionless; while the longer and more slender branches continued to play restlessly about, seeking for further prey. Then, without a word, the two turned away; nor did they speak till they found themselves safely outside the great gates. Then they looked, horror-struck, at each other.