Allan's Wife by H. Rider Haggard

We gained the spot by the stream where Stella had been taken. The natives looked at the torn fragments of the dogs, and at the marks of violence, and I heard them swearing to each other, that whether the Star lived or died they would not rest till they had exterminated every baboon on Babyan's Peak. I echoed the oath, and, as shall be seen, we kept it.

We started on along the stream, following the spoor of the baboons as we best could. But the stream left no spoor, and the hard, rocky banks very little. Still we wandered on. All night we wandered through the lonely moonlit valleys, startling the silence into a thousand echoes with our cries. But no answer came to them. In vain our eyes searched the sides of precipices formed of water-riven rocks fantastically piled one upon another; in vain we searched through endless dells and fern-clad crannies. There was nothing to be found. How could we expect to find two human beings hidden away in the recesses of this vast stretch of mountain ground, which no man yet had ever fully explored. They were lost, and in all human probability lost for ever.