Somehow this place impressed me, possibly because it was the only thing, except the reservoir, which seemed to have a purpose in the whole scheme of the hill top. Where there was labour and manifest purpose, there must surely be some connection. I examined all round the place minutely, scrambling down the rocks below and on either side, but always keeping a bright look out in case of spies. The only thing I noticed was that there seemed a trace of some kind of a pathway through the wood here. It was not sufficiently marked to allow one to accept it with certainty as a pathway; but there is something about a place which is even occasionally trodden, which marks it from its surroundings virgin of footsteps. I could not find where the path ended or where it began. It seemed to grow from the monument, but here underfoot was stone and hard gravel; and the wind coming over the steep slope swept the fallen pine needles back amongst the shelter of the trees. After a few hundred yards any suggestion of a pathway disappeared, lost in the aisles of the pine trees spreading round on every side. There was no need of a pathway here where all was open. Once or twice as I searched the thought came to me that there might be some opening here to a secret way or hiding place; but look how I would, I could not find the faintest trace or suggestion of any opening. In the end I had to take it that the erection was merely a monument or mark of some kind, whose original purpose was probably lost in time. At last, as the day was well on, I made my way back to where my bicycle was hidden, always taking care to keep from observation. Then emerging on the road, I went as usual through the old ruined gateway and the long winding avenue to the castle. Marjory met me with an anxious look, and hung on to my arm lovingly as she said: "Oh, you are late! I have been quite nervous all the morning lest anything should have happened to you!" Mrs. Jack, after we had greeted, discreetly left us alone; and I told my wife of all that I had thought since we had parted, and of what I had seen on the hill top. She was delighted at the idea of a means of signalling; and insisted on my coming at once to the roof to make further arrangements and discoveries.