Snowcats move slower than helicopters, but they keep working when wind shuts the heli down. On a powder-chasing week in the Andes, the cat is the line that doesn't go dark.
South America's cat scene is small and boutique. Three operations stand out: Ski Arpa runs two cats above the Aconcagua valley with no lifts at all, Las Leñas uses cats to extend its backcountry on the storm days the upper mountain closes, and Corralco runs cat laps on the flanks of Volcán Lonquimay above its lift-served base.
Most travelers fold one or two cat days into a resort-based week. You ski lifts when the weather cooperates and switch to the cat when it doesn't, same hotel, same dinner, very different day on snow.