Alpine Helicopters operates from a modest hangar seventeen kilometres west of Calgary, where Canmore's valley narrows between Rundle's limestone wall and the Fairholme Range. The outfit launched in 1988 with a single Eurocopter AS350, ferrying geologists and film crews into roadless terrain before pivoting to tourism in the mid-nineties. Today its fleet of six turbine aircraft lifts more than twelve thousand passengers annually over some of North America's most photographed topography. The appeal lies in compression. Trails that demand eight hours and fifteen hundred metres of elevation gain shrink to a twelve-minute arc when viewed from fifteen hundred feet. The Bow Glacier, fed by the Wapta Icefield's forty square kilometres of névé, recedes three metres per year—a figure visible only from above, where the terminal moraine's grey fans mark decades of retreat. Flight paths follow natural corridors: the Spray Valley's north-south trench, carved by Pleistocene ice, or the broad saddle where the Continental Divide dips below three thousand metres. Pilots bank over turquoise tarns trapped in cirques, their color derived from suspended glacial flour—particles ground to silt by ice and held in colloidal suspension. Canmore's position matters. Kananaskis Country sprawls west and south, a patchwork of provincial parks where helicopter access remains permitted under Alberta's Wilderness Areas Act. The Canadian Rockies helicopter tour routes skirt the boundaries of Banff National Park, where commercial overflights face seasonal restrictions to protect wildlife corridors. Morning departures capitalize on laminar flow—stable air masses that reduce turbulence over ridgelines. Afternoon thermals, rising off sun-warmed rock faces, make for bumpier rides but better visibility, as convection lifts valley haze. The machines themselves operate under Visual Flight Rules, requiring pilots to maintain sight of terrain and a minimum of two statute miles visibility. Passengers board through sliding doors; intercom headsets cancel the turbine's eighty-five-decibel whine. Routes vary by season. Summer itineraries favor waterfall tours, when snowmelt swells creeks into white plumes. Autumn flights highlight larch stands turning gold at treeline. Winter sorties track bighorn sheep migrations across avalanche-prone slopes. Each sortie logs coordinates, altitude, and passenger weight—data compiled for Transport Canada's annual safety audits. No flight exceeds the aircraft's certified ceiling of thirteen thousand feet, well below the oxygen-supplementation threshold but high enough to render the Trans-Canada Highway a thin grey thread.