Sep 4th, 2009 Mountain Biking Three Sisters Photo Essay FacebookXEmailLinkedIn Fernie’s Three Sisters Mountain is the tallest and most prominent peak in the valley and there is a trail from the summit. This 6200ft climb and descent is only recommended for the extremely adventurous rider. Summit ridge Surfing the scree Bikers dancing on the ridge Scree berms Endless bump and grind Moonscape rocks dwarf rider