 
		                              
	                        The Andes are topped by the largest concentration of ice anywhere in the Earth’s tropics (the belt around the middle of the planet, between 30 degrees North and 30 degrees South latitude). In 1991, tropical Andean glaciers covered an estimated 1,065 square miles (2,758 sq kms), with 70% in Peru, 20% in Bolivia and the rest in Ecuador, Colombia and Venezuela.