A gel is any liquid (usually) or gaseous medium suspended in a solid three-dimensional mesh which entraps the medium so that it does not flow. By way of (somewhat flawed analogy) think of a giant role of bubble wrap. Its mostly air. But the plastic keeps the air from flowing at a large scale.
Location. Peru is located in the west of South America, and has borders with Ecuador, Colombia, Brazil, Bolivia and Chile. It has sovereignty over 1,285,215 km2 of land and 200 nautical miles of the Pacific Ocean, as well as 60 million hectares of the Antarctic.
The Cusco Region is the most visited department in Peru. It is home to the city of Cusco, the Sacred Valley of the Incas, and the citadel of Machu Picchu, one of the New 7 Wonders of the World. The city of Cusco was the capital of the Incan Empire and was placed on the list of World Heritage Site by UNESCO in 1983.