1. Lake Fagnano, also known as Lago Fagnano or Lago Kami, is a large lake located in the Tierra del Fuego region of Argentina. It is situated about 100 kilometers north of the city of Ushuaia and is one of the largest lakes in the region.

The lake stretches approximately 98 kilometers in length and is surrounded by stunning landscapes, including the snow-capped Andes Mountains and dense forests. The water of Lake Fagnano is a pristine blue color, making it a popular spot for photography and outdoor activities.

One interesting fact about Lake Fagnano is that it is a glacial lake, formed by the movement of a glacier thousands of years ago. It is also home to several species of fish, including rainbow trout and brown trout, making it a popular fishing destination.

2. There is no specific working time for Lake Fagnano as it is a natural attraction and can be visited at any time. However, it is recommended to visit during daylight hours for the best views and activities.

Unfortunately, there is no specific phone number available for Lake Fagnano as it is a natural site.

3. There is no entrance fee or ticket required to visit Lake Fagnano. To reach the lake, you can either rent a car and drive from Ushuaia or join a guided tour that includes transportation. Many tour companies in Ushuaia offer excursions to Lake Fagnano, which usually include transportation, a guide, and sometimes activities such as hiking or fishing. It is recommended to book a tour in advance to ensure availability and convenience.