Then, taking my courage in both my hands, I decided. I gave my pony a cut, and set him off on the homeward road. I knew he was safe to get back in four or five hours, and in broad day there was little fear of wild beasts attacking him. I had tied my sleeping bag on to the saddle, and had with me but two pocketfuls of food. I had also fastened on the saddle a letter to my Dutch foreman, bidding him send a native with a spare horse to fetch me by the evening. Then I started off to look for a chimney. A boyhood spent on the cliffs at Kirkcaple had made me a bold cragsman, and the porphyry of the Rooirand clearly gave excellent holds. But I walked many weary miles along the cliff-foot before I found a feasible road. To begin with, it was no light task to fight one's way through the dense undergrowth of the lower slopes. Every kind of thorn-bush lay in wait for my skin, creepers tripped me up, high trees shut out the light, and I was in constant fear lest a black mamba might appear out of the tangle. It grew very hot, and the screes above the thicket were blistering to the touch. My tongue, too, stuck to the roof of my mouth with thirst. The first chimney I tried ran out on the face into nothingness, and I had to make a dangerous descent. The second was a deep gully, but so choked with rubble that after nearly braining myself I desisted. Still going eastwards, I found a sloping ledge which took me to a platform from which ran a crack with a little tree growing in it. My glass showed me that beyond this tree the crack broadened into a clearly defined chimney which led to the top. If I can once reach that tree, I thought, the battle is won. The crack was only a few inches wide, large enough to let in an arm and a foot, and it ran slantwise up a perpendicular rock. I do not think I realized how bad it was till I had gone too far to return. Then my foot jammed, and I paused for breath with my legs and arms cramping rapidly. I remember that I looked to the west, and saw through the sweat which kept dropping into my eyes that about half a mile off a piece of cliff which looked unbroken from the foot had a fold in it to the right. The darkness of the fold showed me that it was a deep, narrow gully. However, I had no time to think of this, for I was fast in the middle of my confounded crack. With immense labour I found a chockstone above my head, and managed to force my foot free. The next few yards were not so difficult, and then I stuck once more.
For the crack suddenly grew shallow as the cliff bulged out above me. I had almost given up hope, when I saw that about three feet above my head grew the tree. If I could reach it and swing out I might hope to pull myself up to the ledge on which it grew. I confess it needed all my courage, for I did not know but that the tree might be loose, and that it and I might go rattling down four hundred feet. It was my only hope, however, so I set my teeth, and wriggling up a few inches, made a grab at it. Thank God it held, and with a great effort I pulled my shoulder over the ledge, and breathed freely.
My difficulties were not ended, but the worst was past. The rest of the gully gave me good and safe climbing, and presently a very limp and weary figure lay on the cliff-top. It took me many minutes to get back my breath and to conquer the faintness which seized me as soon as the need for exertion was over.
When I scrambled to my feet and looked round, I saw a wonderful prospect. It was a plateau like the high-veld, only covered with bracken and little bushes like hazels. Three or four miles off the ground rose, and a shallow vale opened. But in the foreground, half a mile or so distant, a lake lay gleaming in the sun.
I could scarcely believe my eyes as I ran towards it, and doubts of a mirage haunted me. But it was no mirage, but a real lake, perhaps three miles in circumference, with bracken-fringed banks, a shore of white pebbles, and clear deep blue water. I drank my fill, and then stripped and swam in the blessed coolness. After that I ate some luncheon, and sunned myself on a flat rock. 'I have discovered the source of the Labongo,' I said to myself. 'I will write to the Royal Geographical Society, and they will give me a medal.'
