They were very strange to his eyes, and indeed the whole aspect of that valley became, as he regarded it, queerer and more unfamiliar. The greater part of its surface was lush green meadow, starred with many beautiful flowers, irrigated with extraordinary care, and bearing evidence of systematic cropping piece by piece. High up and ringing the valley about was a wall, and what appeared to be a circumferential water channel, from which the little trickles of water that fed the meadow plants came, and on the higher slopes above this flocks of llamas cropped the scanty herbage. Sheds, apparently shelters or feeding-places for the llamas, stood against the boundary wall here and there. The irrigation streams ran together into a main channel down the centre of the valley, and this was enclosed
