www.andesweb.com and
www.casatours.com will be helpful as you plan your trip to South America. While a Chilean responded to this post saying El Colorado has the best park and while he/she is correct in that statement, please do not expect to find anything close to what North American resorts are offering. You go to Chile to ski pow and big-mountain lines or to build a sick gap over wind lips, not to ski their parks or pipes. You will be much better served by Snowpark in NZ if you want to go to the southern hemisphere to ski park.