Cwm Dyli (pronounced 'Dully') is the great eastern recess of Snowdon, and universally admitted to be the finest thing of the kind in Wales. The long sharp ridge of Crib Goch and Crib y Ddysgl bounds it on the north, while the almost equally fine, though less regular, ridge and majestic crags of Lliwedd shut it in on the south. It contains Llyn Llydaw (Hluddow), the largest lake, and Glaslyn, the finest tarn on the whole mountain, and is one reason why the ascent of Snowdon from Capel Curig is the finest of all.
The stream forms some fine cascades (800 ft. above sea level) in its descent to the Vale of Gwynant. Half a mile above these cascades Clogwyn Aderyn, on the north bank of the stream, and Clogwyn Penllechen, between it and Llyn Teyrn (1,238 ft.), have a climb or two on them. At this llyn the path from Gorphwysfa comes in, and along it the great majority of people enter the cwm. The next landmark as we ascend is Llyn Llydaw (1,416 ft.), nearly a mile long, the elevation of which so close an observer as Cliffe over-estimated by more than 1,000 ft. Climbers bound for Lliwedd leave the lake entirely on the right, and find a foot-bridge close to the exit of the stream from it. The path to Snowdon crosses the lake by a stone causeway, which is rarely submerged by floods. From the head of Llyn Llydaw there is a steep rise—555 ft. in a quarter of a mile—to the tarn called Glaslyn (1,971 ft.) Between this and the sky line at the head of the cwm, 1,290 ft. higher, only one more hollow remains, called Pantylluchfa, and here the crags of Clogwyn y Garnedd show up magnificently. It may be mentioned that many people get hopelessly confused in reading or giving descriptions of Snowdon, because they fail to distinguish Glaslyn, here, from Llyn Glas, half a mile to the north of it, in Cwm Glas, and another Llyn Glas less than a mile due west in Cwm Clogwyn. If they know Glaslyn they naturally assume that it must be in Cwm Glas, and if they know Cwm Glas they place Glaslyn in it. Some of the confusion would be avoided if the latter were called by what would seem to be its older and true name—Llynffynnonglas.
Cwm Dyli was the scene in 1875 of one of the strangest of all the disasters which have happened on the mountain. The victim was Mr. Edward Grindley Kendal, of Crosby, near Leicester, who on June 11 left Gwynant Valley in order to ascend Snowdon. Nothing more was heard of him or his till the end of that month, when a Mr. and Mrs. David Moseley, descending with a guide, found on the edge of Llyn Llydaw a wet and mouldy pair of boots, each containing a stocking marked 'Kendal' and a garter. It was at once surmised that the missing man had been wading and become engulfed in quicksands, which were stated to be numerous. His friends went so far as to employ a professional diver to explore the bottom of the lake, though it would seem that if the body was in the water simpler means would have answered the purpose, and if it was below the water the diver could neither find it nor follow it. At any rate he did not find it, because it was not there. It was found about ten days later on Crib y Ddysgl uninjured—it was identified by Mr. Ison, brother-in-law of the deceased and the jury at Llanberis found a verdict of 'death from exposure.' It was not precisely stated on what part of Crib y Ddysgl the body was found, and nothing transpired as to the condition of the feet; but it is simply amazing to anyone familiar with the character of the ground that a bare-footed man should ever have got so far. Why he did it and how he did it will always remain among the mysteries of Snowdon.[ [13] ] Other deaths have taken place in this cwm, for which see under Lliwedd and Clogwyn y Garnedd.
It is curious that two of the lakes in this valley are among those mentioned 200 years ago by the learned Edward Lhwyd as 'distinguished by names scarce intelligible to the best Criticks in the British.'
Clogwyn y Garnedd y Wyddfa—i.e. 'the Precipice under the Cairn of Snowdon'—has been commonly known by the first three words only for at least 200 years. It is one of the grandest cliffs on Snowdon, and gives very fine climbing.
For more than two centuries this precipice has been famous as a refuge for rare ferns and plants. The guide William Williams, well known as a botanist, lost his life here while in search of the Woodsia; so at least says Mr. T. G. Bonney, though he is far from accurate in the date of the accident, which, writing in 1874, he describes as having taken place 'some twenty years ago.' The actual date was June 19, 1861.[ [14] ] The old guide had taken up a lady and gentleman from Llanberis, and went from the top alone to gather ferns. The fall was 'down a declivity of three hundred yards.' The body was found at the foot of the precipice, after 'scouts' had been sent out. He had fallen from the point where the slope suddenly changes from about 45° to, perhaps, 75° or 80°. The spot where he slipped was for many years, and perhaps still is, marked by a white stone.
On the shore of Glaslyn, at the south-west corner, there is a small cross of wood marking the spot where the body of Mr. Maxwell Haseler was found. He was making for Snowdon by the Lliwedd ridge, and fell from a short distance above Bwlch y Saethau. The party seem to have been well equipped, and contained members of experience, who were not without ropes and axes. They started on January 26, 1879, for Snowdon by Lliwedd, and, after lunching about 1 P.M. on Bwlch y Saethau, proceeded in the direction of Snowdon. Mr. Haseler took a separate course, more to the right hand, and almost immediately seems to have slipped and fallen. His body was found next morning by the shore of Glaslyn, and it was reckoned that he had fallen some 600 or 700 ft. The inquest was held at Penygwrhyd. The victim of this accident was only twenty-three years old.[ [15] ]