The western slope of the range is very abrupt. Large forces of men were engaged in cutting a narrow ledge for a footpath into the face of the steep mountainside. The trail wound back and forth continuously; looking over the rim of the narrow shelf one could count six or eight loops underneath, one below the other.
The work of cutting such a way is hazardous for the men engaged in it. The soil is loose and saturated with water, so landslides were of frequent occurrence; and whenever the irresistible avalanche swept the precipitous terrain, it usually carried one or more of the laborers with it and buried them under tons of rock and débris. It was invariably hopeless to try to find the body, so the survivors simply erected a cross on the spot. Frequently there were several crosses together, and in one place I counted seventeen standing side by side.
Late in the afternoon we reached a lone hut in a small clearing—the hastily erected shelter of a group of peons. The men invited us to stop, and as the locality looked interesting we accepted the invitation; but we erected our tent and lived in it in preference to the hut.
All the surrounding country was covered with virgin forest. It had never been trodden by man, at least not within many years; there were no side trails of any kind, so that it was impossible to penetrate very far.
Among our first mammals were a doe and fawn of a little forest-deer (Mazama setta). They are commonly known as brockets or spike-bucks, as each horn consists of a single prong. I believe that these deer are not so rare as generally supposed, but they are seldom collected on account of the difficulty of hunting them in the thick jungle. The peons shot the ones we secured. They had discovered a path leading to a small stream, and concealing themselves on the opposite side, waited until the animals came down to drink; then they shot them. The men also brought in a huge bushmaster that they unearthed while clearing away underbrush. The deadly reptile is known as equis to the natives on account of the black X-shaped marks on its back.
The mountainsides were scarred with deep fissures and ravines filled with the darkest and most impenetrable of forests. It was possible to look across from one side to the other, but crossing them was impracticable. Each morning I could see a flock of some thirty-odd swallow-tailed kites soaring just above the trees on the far side of one of the ravines. The magnificent birds resembled huge white-bellied swallows, or swifts, as they circled majestically over the dark forest; they uttered shrill screams all the while. Apparently they fed on the wing, and specimens collected by us later had eaten quantities of large beetles and flying ants. At about nine o’clock the band always resorted to the top of a tall tree that towered far above its contemporaries for a short rest; this was rather unusual, as the birds are rarely seen perched, and the natives said they never alight during the daytime. Live birds, or specimens freshly killed, have the glistening black back covered with a beautiful grayish “bloom” or powder that gives it a soft, velvety appearance. However, this disappears soon after death.
A species of pigmy squirrel (Microsciurus) lived in the forest, but we seldom saw any of the little creatures scarcely bigger than one of the larger kinds of mice. I have always found these animals much rarer than the ordinary squirrels; usually they live in pairs. They seem to prefer forests abounding in palms and to feed on the various kinds of palm-fruits and nuts. They frequently evince a great deal of curiosity and can be approached to within a short distance before taking fright and scampering out of sight among the leaves.
The minute creatures move rapidly and gracefully and make long, daring leaps. In running over the leaves and branches they follow the lateral stems, and on reaching the ends ascend through the tree-top or thick foliage by leaping crossways from twig to twig, as if ascending the rungs of a ladder.
I kept one that was given to me by the natives as a pet for some time. It made its home in the pocket of my flannel hunting-shirt, where it was always sure to find a bit of cracker or sugar, and to which it could retreat when frightened. Whenever anything of an unusual nature occurred, the bright, inquisitive little eyes always appeared suddenly so as not to miss a single thing that might be of interest. It never attempted to bite or run away, and seemed perfectly contented with the company of the friends that fed and protected it.
Eventually we started back toward Popayán. We crossed the high brush-covered divide July 4; a violent electrical storm had been staged on the wild mountain-top as if in noisy celebration of the day. It began with a dark mist that covered everything. Then rain and hail fell uninterruptedly for more than an hour, while lightning flashed and blue-green flames seemed to leap toward the blackened rock. Sometimes the bolts came from above, and again they were below us so that we were enveloped in a weird, ghastly light. The thunder was terrific and kept up a continuous crash and rumble. It was impossible to see any other member of the expedition on account of the thick haze—there was no shelter of any kind—only the narrow shelf-like trail that snaked its way along the steep slope. After the storm we made camp; the men and mules kept straggling in until a late hour; they were very wet and much bedraggled, but apparently none the worse for the nerve-racking experience.