The first day we met you at your accommodation between 6:00 and 6:30 am, to go to the border of Hito Cajon we passed Chilean and Bolivian border. It is necessary to carry Chilean rut and if you are a foreigner passport and PDI. We have breakfast and leave our things in a comfortable shelter. We prepare to take an acclimatization hike through Laguna Verde y Blanca at 4,300 meters of approximately three hours, a beautiful hike, with a lot of wind so it is recommended to wear warm clothes. Later we returned to the shelter for lunch, rest and dinner.