Parque Nacional Nahuel Huapi is a vast, protected area in the Lake Distrit of Argentinean Patagonia. The park is known for Nahuel Huapi, its largest glacial lake. San Carlos de Bariloche, known for its chocolate industry, and the resort of Villa La Angostura are on its shores. The Andes form its western border and include soaring Mount Tronador, a dormant volcano. The forest areas are home to rare pudu deer.