Replying to Parks in south america

so basically i am considering many different options for this summer, one of which being a study abroad program in south america or any other location with snow.
firstly, what south american resorts have parks/good parks?
does anyone have experience with doing something similar in south america or anywhere else for that matter?
i know that there are threads on similar topics but i wanted some specific and up to date opinions.

thanks for the help