Isla del Pescadoor Isla Incahuasi,Quechua for Inca house, so-called because of a stone structure, believed to have been a rest stop for ancient traders crossing the salar. It is a lovely island covered in large cacti. There is a walking trail with superb views across the huge white expanse of salt to the mountains, including Tunupa, shimmering on the horizon. it is best to visit this area with a tour operator. Photo by Christian Mariotti.