Opening weekend marked the Argentine resort's 25th anniversary. That's a good track record for a resort six hours from the closest major city (Mendoza). Las Leñas is entirely above the treeline. It makes up for difficult access by sheer size, snow quality, and some of the best advanced/expert terrain of any ski resort in the world. This terrain is why most North Americans make the pilgrimage to Las Leñas, and the Marte high alpine chair is the key to reaching it. I was able to use the Marte on Sunday and enjoy four afternoon laps, despite that fact that the lift is infamous for closure due to high winds and intense snow storms. The snow was like springtime corn and super soft by 1 p.m., allowing skiing on some of the steeper runs. The resort staff and ownership is proud of its quarter-century of service and pulled out all the stops with a weekend special concert party and rail jam, flush with top Argentine skiers and snowboarders. The crowd was impressed by the athletic prowess on display: straight rail slides, 50/50s, and two riders sliding the rail at the same time. Guests were offered up free wine and hot chocolate in appreciation of the opening weekend turnout. Popular Argentine electro-pop band Miranda wrapped up the celebration with a fireworks finish. Las Leñas currently has snow all the way to the base and all runs are open. Out of bounds areas on both the front and back sides are closed for at least another week. The snow there is hard but should be open after the next snowfall. Visitors may ski out of bounds off Cenidor run and to the right of Vulcano chairlift as of now. Las Leñas is a safe bet in South America for skiing and boarding due to the amount of snow they currently have and more in the forecast.