Description
Monarch butterfly sanctuary in San José del Rincón, State of Mexico. Each year, butterflies travel more than 2,500 miles from the forests of the United States and Canada, where they reproduce, to the forests of central Mexico, where they hibernate. Mexico has a protected natural area known as the Monarch Butterfly Biosphere, located in the states of Michoacán and the State of Mexico. It is currently recognized by UNESCO as a natural world heritage site.