Located directly SE of South Kananaskis Pass above Three Isle Lake. A rocky peak, 700 meters above Three Isle Lake. Although part of the route is on glacier, a rope is not required.
Mount McHarg is theoretically a separate peak, but in reality just a name attached to a point on the western shoulder. According to Rick Collier who has climbed both says:
"McHarg is, in fact, hardly a separate summit, at least by most calculations of height and distance separation, being only a westerly and slightly lower shoulder of Worthington. But, hey, it is marked on the map, was climbed (along with its sister peak) by the Boundary Commission in 1916, and is mentioned in the Guidebook (Greed 74). Which raises a point of mountaineering etiquette: the party of Foxall and Hobill made an impressive ascent of the E face and N ridge of Worthington in 1973 and was awarded in the Guidebook the distinction of a first ascent; it is true that this pair made the first alpine ascent of this peak, but the summit was originally bestrode by the Boundary boys some 57 years earlier.
Name Notes: Named in 1956 after Lt. Col. Don Worthington who was killed in action in 1944 during World War II while commanding the 7th Battalion, BC Regiment.
The name McHarg is also used to refer to the western shoulder of Worthington. World War I coincided with the rise of alpinism, surveying, and mountain naming. The lawyer Lieutenant-Colonel William Frederick Hart McHarg (1869 Kilkenny, Ireland -1915 St. Julien, France) commanded the 7th Battalion, Canadian Expeditionary Forces. He was the first British Columbian killed in action during World War I, while on a reconnaissance mission ahead of the Battle of St. Julien in April 1915.