Llano Grande is a flat area among mountains in
State of Mexico
The State of Mexico ( es, Estado de México; ), officially just Mexico ( es, México), is one of the 32 federal entities of the United Mexican States. Commonly known as Edomex (from ) to distinguish it from the name of the whole country, it is ...
in
Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...
. It is an old volcanic
caldera
A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption. When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber is ...
. It is at latitude 19.9910661 degrees north, longitude 99.6458468 degrees west.
Page 66
Mexico's Volcanoes: A Climbing Guide, By R. J. Secor
References
External links
Google Earth view
Calderas of Mexico
Landforms of the State of Mexico
Pleistocene calderas
{{México-geo-stub