From the summit of the pass the view is one of indescribable grandeur, a wilderness of gigantic cliffs far and near, stretching up and up to glittering summits. Scrambling down the steep descent, Lake Oesa comes into view far below, at the foot of Mount Yukness. Oesa is an Indian word meaning Ice, and the lake has been appropriately named as, on account of its elevation, it is frozen over throughout the greater part of the year and never quite free from ice. A climb down ledges and talus slopes brings one to the little lake, and from here the first glimpse is caught of the exquisitely beautiful Lake O'Hara in the valley far below. As one gets nearer, the loveliness of this secluded lake grows, and is all the more compelling because of the absolute stillness, no chalet or carriages or boats or human interlopers other than ourselves. The colouring is as perfect, as varied and as utterly beyond description as that of Lake Louise. The lake is an Alpine gem, in whose bright surface are reflected the green of the forest that surrounds its shores, and the mountains that enclose it on either side, the huge bulk of Mount Schaffer and the curious pinnacles of the Wiwaxy Peaks. A couple of miles to the southwest, and reached by a good trail, is Lake McArthur, another mountain tarn only a little less charming than Lake O'Hara. If one has only a limited time to spend in the Park, however, unquestionably it should be devoted to the Yoho Valley, on the north side of the railway. Several good roads and trails now lead to the valley from Field, by way of Emerald Lake, Burgess Pass and the Yoho River, so that the visitor has a choice of routes, and is assured of many enchanting views both going and coming. The valley was explored as long ago as 1897 by Jean Habel, a famous German mountaineer, who spent seventeen days there and returned with such enthusiastic accounts of mountains, lakes and wonderful waterfalls that it was determined to make the valley accessible to tourists. A trail was commenced by the Canadian Pacific Railway in 1900, and since the organisation of the district into a national park this first attempt has been extended into a system of roads and trails giving access to every part of the valley. A delightful drive through "aisles of stately firs," and over a good wagon road, brings one to Emerald Lake, where the Railway Company, with its customary thoughtfulness, has provided a comfortable and picturesque chalet, situated on a wooded promontory. The lake, says Outram, is a "gem of perfect beauty, its colouring marvellously rich and vivid, and constantly changing under the shifting lights and shades." In its surface are mirrored the ramparts and precipices of Mount Wapta and Mount Burgess and the snowy glaciers of President Mountain.