The Samalayuca Dunes is a large sand dune

Dune

In physical geography, a dune is a hill of sand built by wind. Dunes occur in different forms and sizes, formed by interaction with the wind. Most kinds of dunes are longer on the windward side where the sand is pushed up the dune and have a shorter "slip face" in the lee of the wind...

 field located near the northern border of the Mexican state of Chihuahua, near the border with the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Texas

Texas

Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

, some 52 km south of Ciudad Juárez

Ciudad Juárez

Ciudad Juárez , officially known today as Heroica Ciudad Juárez, but abbreviated Juárez and formerly known as El Paso del Norte, is a city and seat of the municipality of Juárez in the Mexican state of Chihuahua. Juárez's estimated population is 1.5 million people. The city lies on the Rio Grande...

. The field covers approximately 150 square kilometers in area, and includes some of the deepest sand dunes in North America

North America

North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

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Endemic species

As in many large dune systems, there are many species which are endemic

Endemic (ecology)

Endemism is the ecological state of being unique to a defined geographic location, such as an island, nation or other defined zone, or habitat type; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, all species of lemur are endemic to the...

 to the Samalayuca dunes, so the region is biologically unique on a global scale.
Most of the known endemic species are plants and various native bee

Bee

Bees are flying insects closely related to wasps and ants, and are known for their role in pollination and for producing honey and beeswax. Bees are a monophyletic lineage within the superfamily Apoidea, presently classified by the unranked taxon name Anthophila...

 species.

Movie setting

The dunes were used to film many of the exterior shots in the 1984 movie Dune

Dune (film)

Dune is a 1984 science fiction film written and directed by David Lynch, based on the 1965 Frank Herbert novel of the same name. The film stars Kyle MacLachlan as Paul Atreides, and includes an ensemble of well-known American and European actors in supporting roles. It was filmed at the Churubusco...

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