In the latter part of the 1960's, continuing into the 1970's, John Howard's "Alpine Crafts" guiding company ran mountaineering courses into the area on a fairly steady basis. Many of the classic easier routes on the peaks were developed during this period.
The Alpine Crafts guides gave many of the peaks provisional names which can be seen in the 1974 Culbert guide. However, the Geographic Names committee recognized that many of these peaks already had names bestowed on them by the Lil'wat First Nation, and made the latter names official. Most of these names have become the commonly used ones. The exception is Slalok, which many older climbers still call "Rex's Pillar".
Most glaciers can be reached in a few hours from Duffey Lake Road and most peaks climbed in a day or two, making it an ideal area for teaching mountaineering courses. Since the completion of the Keith Flavelle Hut in 1986 near the head of Cerise Creek, it has also become a popular winter destination for back-country skiers.