Milodon Cave was declared a National Monument. It is a cave 30 meters high and 200 feet deep in a side of the mountain Benitez where Captain Eberhard found in 1896, a piece of skin, bones, hair and excrement of a prehistoric animal: the mylodon. Economic entry, open from 8.30 to 18 hours. It is a trip of 48 miles round trip from Puerto Natales, with great views along the road. In the area there are more caves, some with stalactites.