Climbers became interested in the group shortly after. In 1910, an expedition led by Thomas Longstaff and surveyor Arthur Oliver Wheeler entered the area. They were guided by renowned European climber Conrad Kain. Kain would return to the area six years later and pioneer many difficult climbing routes. The Austrian climber described his route up Bugaboo Spire as his most difficult Canadian ascent, more challenging than his celebrated route up Mount Robson, the highest peak in the Canadian Rockies. Along with Albert and Bess McCarthy and others, Kain would pioneer first ascents of North Howser, Marmolata, and Crescent Spires.