Yes, that is how it is spelled. The mountain was named after a WWI ship. This hike follows the eastern facing ridge of Mt. Indefatigable. It is classed as strenuous, climbing 457 metres (1500 feet) over 3.9 km, giving spectacular views of the Kananaskis Valley.
Here are a couple of the vistas from or near the top that we photographed today. I will write more detail and upload more photos in a day or so - have an MRI tomorrow and need to get to sleep now.