The terms 'Moses' Path' and 'Moses' Trod' are also used to describe this track. It is not noticed in the guide-books, but something is said about it by Mrs. Lynn Linton.

Moss Gill, on Scafell, is the next gully on the east or Mickledoor side of Steep Gill. The name Sweep Gill ('from the probable profession of the future first climber of its extraordinary vertical chimneys') was suggested for it by Mr. Gilson shortly after its discovery, but that name has been entirely superseded. The first mention of it in the Wastdale Head book is a note by the present writer in June 1889, recommending it to any one in search of a new and difficult climb. His party on that occasion was repulsed after reaching the great blocks, which have only been passed since by the aid of the artificial step subsequently cut in the rock. It was tried again a fortnight later by a party under Mr. R.C. Gilson, which got very nearly, but not quite as far. Two days later the same party explored the gill from above and descended in it for a considerable distance. It was not, however, till three and a half years later, at Christmas, 1892, that the climb was accomplished by Dr. J.N. Collie, G. Hastings, and J.W. Robinson, and their account of it is:

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MOSS GILL AND STEEP GILL
A, Moss Gill (Collie's exit); B, Moss Gill (Collier's exit): C, Top of Steep Gill. Just below the point to which A and B converge is the artificial step.

'The chief points in this climb are, First—to begin on the rock wall to the right of the foot of the gill and not in the very foot of the chimney itself, then enter the gill just below the first great pitch, which may be turned by climbing the wall on the right hand on to a grass ledge of considerable size, called the "Tennis Court"; enter the gill from here again, and pass into the cavern under the great boulder.'

'We found,' says Dr. Collie, 'that below the great slab which formed the roof, another smaller one was jammed in the gully, which, stretching across from side to side, formed the top of a great doorway. Under this we passed and clambered up on to the top of it. Over our heads the great rock roof stretched some distance over the gill. Our only chance was to traverse straight out along the side of the gill, till one was no longer overshadowed by the roof above, and then, if possible, climb up the face of rock and traverse back again above the obstacle into the gill once more. This was easier to plan than to carry out; absolutely no hand-hold, and only one little projecting ledge jutting out about a quarter of an inch and about two inches long to stand on, and six or eight feet of the rock wall to be traversed. I was asked to try it. Accordingly, with great deliberation, I stretched out my foot and placed the edge of my toe on the ledge. Just as I was going to put my weight on to it, off slipped my toe, and if Hastings had not quickly jerked me back, I should instantly have been dangling on the end of the rope. But we were determined not to be beaten. Hastings' ice-axe was next brought into requisition, and what followed I have no doubt will be severely criticised by more orthodox mountaineers than ourselves. As it was my suggestion I must take the blame. Peccavi! I hacked a step in the rock—and it was very hard work. But I should not advise any one to try and do the same thing with an ordinary axe. Hastings' axe is an extraordinary one, and was none the worse for the experiment. I then stepped across the mauvais pas, clambered up the rock till I had reached a spot where a capital hitch could be got over a jutting piece of rock, and the rest of the party followed. We then climbed out of the gill on the left, up some interesting slabs of rock. A few days later the gill was again ascended by a party led by Mr. J. Collier. They did not follow our track to the left after the overhanging rock had been passed, but climbed straight up, using a crack which looks impossible from down below, thus adding an extra piece of splendid climbing to the expedition.'

Only four days after Dr. Collie, a party of five climbers, led by Dr. J. Collier, made the second ascent of Moss Gill. The description given by their precursors was of great assistance, and except that the gill was entered much lower, the same line was followed up to the traverse from the great boulder. Here, instead of climbing out to the sky line on the left side, the ascent of the gill itself was completed by climbing the vertical moss-grown wall on the right. This part was entirely new, and Dr. Collier's note of his variation, or we may say correction, for his climb is the more direct of the two, is that the ascent of the wall was made by using the cleft of the gill for about 15 ft., when a resting place was reached. Above this point they climbed about 15 ft., and then traversed out on the face of the wall for about 8 ft. by some ledges which afforded just sufficient hold. They then ascended vertically about 6 or 8 ft., re-entering the cleft above a small platform of jammed stones ('Sentry Box'). This gave a starting-point for the completion of the ascent, which was made by climbing out on to the face of the wall to enable the jammed stones at the top of the pitch to be turned. These last stones did not appear to be secure and were avoided. From this point the gill continues upward at an easy slope, with one pitch of about 15 ft. to the back of the small summit on the left of Deep Gill. Two days later the ascent was repeated by Dr. Collier in company with Professor H.B. Dixon and the late Professor A.M. Marshall, the latter of whom inserted in the Climbers' book a remarkably bold and effective outline sketch of the gill, with explanatory notes. Speaking of the climb, he said that Mr. Collier led throughout, and that the success of the climb was due entirely to him. The climb is a very fine one, and, except for the leader, is entirely free from danger. At the very awkward return from Tennis Court Ledge into the gully, the leader can by a short traverse fix himself directly above the rest of the party. During the traverse from the 'window' the leader can fix the rope over the 'belaying-pin.' In the great chimney the Sentry Box is a place of absolute safety. The climb is difficult, but no part of the chimney is harder than the short rock face leading up to Tennis Court Ledge, and the most awkward traverse (if covered with snow) is the one from Tennis Court Ledge back into the gully. For a party of three 80 ft. of rope would be enough; 100 ft. perhaps better. On January 9, 1893, Mr. O.G. Jones attacked this formidable climb entirely by himself, following Mr. Collier's route up to the foot of the Great Chimney, and then Mr. Hastings' exit to the left. Heavy snow had fallen since the previous ascents and the climb appeared to be exceedingly difficult. Almost every hold had to be cleared of snow; essential precautions rendered the climb of five hours' duration, and it was not completed till after dark (5.45 p.m.). While clearing snow from the more remote portions of the Collie traverse from the window, in search of the third step, the difficulty of balancing proved too great, and he fell into the gully below. A rope had been secured round the window and thus prevented his passing beyond the snow patch on which he fell. The window 'sill,' already loose, was on the verge of falling, and was therefore pushed over into the gully. Returning two days later, he found that the two lowest chimneys in the gill could be taken straight up, and that the simplest way of reaching Tennis Court Ledge is by 'backing up' the chimney till the level of the recess in the right-hand face is reached. 'The recess is near enough to be taken with a stride. It would seem that the Tennis Court Ledge and traverse back into the gully may be entirely dispensed with by continuing up the chimney, the small jammed stones being firm enough to render the necessary assistance. While making these suggestions concerning small details in the climb, it may be mentioned that at the Collie traverse, which the writer's experience leads him to think is the most dangerous piece in the gill, an axe may be of much help to a party. A man fixed on the window sill may press the point of the axe into a conveniently placed notch in the slab facing him, so that the lower end of the handle shall supply a firm hand-hold for any one stretching round the third step.

Foot of Gill on Rake's Progress2,625 ft.
Snow Patch below Tennis Court Ledge2,805 "
Tennis Court Ledge2,840 "
Foot of jammed stone pitch2,870 "
Window in jammed stones2,895 "
Snow patch above2,920 "
Top of left-hand exit3,140 "
Top of Moss Gill proper3,170 "

It must, however, be borne in mind that these measurements, though useful for the purposes of comparison, cannot be absolutely correct, seeing that Scafell itself is only 3,162 ft. high. On February 11 Messrs. Slingsby, Woolley, and R. Williams found the gully very difficult owing to ice, and recorded an emphatic protest against any one following their example by attempting it, 'except when the rocks are dry and quite free from ice.'