However, let us not meet trouble half-way. There are still, thank fortune, many miles of trail in the Canadian national parks which the most enterprising automobile could not possibly negotiate, and many more miles of wonderful mountain country that as yet are even trailess. From the main road which follows the Bow River, and roughly speaking runs southeast and northwest through the centre of the Banff Park, good trails branch off on either side up every important valley. Portions of some of these have been converted into roads, such as those to Lake Minnewanka, Sundance Canyon and up Spray River. From the Chalet at the western end of Lake Minnewanka, where the road now ends, a trail has been opened along the north shore of the lake to its eastern extremity, through the Devil's Gap and Ghost Valley, and across the South Fork of Ghost River to the Stony Indian Reserve, which lies just outside the Park. Ghost Valley is a weird, uncanny canyon, the scene of many wild Indian legends. It is believed to mark the ancient valley of the Bow, Minnewanka and a couple of smaller lakes being the sole remaining relics of the channel. No water now runs through Ghost Valley, though mountain torrents and waterfalls dash down its precipitous sides. Each disappears in its limestone bed, which must cover a network of subterranean channels. The mountains end abruptly in the Devil's Gap, from which one looks out on the plains, or rather on the border land between plain and mountain. A few miles to the north rises a grim peak known as the Devil's Head, and the whole country is studded with Hoodoos and other strange natural features appropriate to such a region. Sir George Simpson, who entered the mountains by the Devil's Gap on his expedition of 1841, camped by the side of Lake Minnewanka, which he named Lake Peechee after his guide, a chief of the Mountain Crees. Peechee is still remembered in the splendid peak which rises behind Mount Inglismaldie. Ghost Valley was the scene of an exploit of which Sir George Simpson tells the story.