Today after breakfast, you’ll be joined by a local guide to explore Torres del Paine National Park – declared a Biosphere Reserve by UNESCO in 1978. Stop at the Milodon Cave along the way – an enormous cavern where remains of prehistoric mammals like the mylodon, an extinct ground sloth, have been found. Continue to the towering granite spikes Cuernos de Paine, then walk to Salto Grande – at 15 m high, this is the park’s largest waterfall. Take some time to admire the powerful cascade tumbling into the turquoise lake below. Visit Lago Gray, a lake fringed by the icy blue Grey Glacier, then hike through a coigue forest, crossing a suspension bridge over the Pingo River and ending up at the beach. Here, you can see icebergs of different shapes and colours floating in the lake, caused by the melting of the Grey Glacier. Return to Puerto Natales for a free evening.