From Leroy Creek Basin, follow the unmarked north trail that initially appears to head directly toward 7FJ. This trail will turn south, and run almost parallel with the Maude massif. It is a loop trail that eventually hits the basin on the east side of Carne Mountain. However, before the trail gets to Carne, it will cross a small perinnial stream, then after about 1/4 mile, it turns east and opens up into a wide open section of Leroy Basin that is directly below Maude's west face.
The approach is made from the upper Leroy Creek Basin. There are several possible variants to gaining the southwest ridge, including from the ice lakes to the east, but this specific route heads up very steep west face and rock bands that begin at the middle basin between Maude and Carne Mountain.
Cross the perinnial stream (usually still frozen during the summer), and head up the west col. When you reach the top of the col, traverse to the NE above and somewhat parallel the top tree line, to the west face. From here, head directly up the west face until you gain the wide southwest ridge. From here, turn left and continue up the straight forward southwest ridge to the summit.
It is very important to note that when this route is done during the summer, you should be careful not to get trapped following a mass array of different trails. Chaos and confusion reins here, as people have become lost or confused by this route, and the numerous boot paths that lead to a dead end and turn around are testament to this route finding issue. There are countless trails and cairns that lead to nowhere, and at the same time, there is more than one route along the west face / buttresses that is ligitimate. Expect routefinding challenges, irregardless of cairns and seemingly intermittent boot paths.
During the early spring, this route variation can be much more direct, but during the summer, the large loose rock and overwhelming scree keeps it fairly indirect. NOTE: For a more scenic descent option with some almost guaranteed solitude (and you didn't leave camping gear back at Leroy Basin), head south on the Leroy High Route" (FT 1512), and descend down Carne Mountain Trail. The direction will put you much closer to the Phelps Creek TH than the standard route down to Phelps Creek Trail from Leroy Basin.
Bring ice axe and crampons for early season. For a summer trip you will need, trekking poles, as much water as you can carry, and plenty of deet to feed the mosquitos and biting flies.
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