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Showing results for Valles Marineris. Search instead for Valles-Marinaris.

Valles Marineris

American  
[val-uhs-mar-uh-nair-is] / ˈvæl əsˌmær əˈnɛər ɪs /

noun

Astronomy.
  1. a canyon on Mars, 3,100 miles (5,000 km) in length, named after the Mariner spacecraft.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The second site lies on the plateau above Juventae Chasma, a 5-km-deep canyon located just north of Valles Marineris.

From Science Daily • Mar. 10, 2026

“What would a coffee mug or a car or any work of my design that was left in the canyon of the Valles Marineris on Mars for 15,000 years look like?”

From New York Times • Sep. 20, 2022

Perhaps places of great natural splendor or scientific interest, such as the Red Planet’s gigantic Valles Marineris canyon, would always remain off-limits.

From Scientific American • May 21, 2019

It would be expected to come out in specific locations: near a fault at the bottom of Valles Marineris, for instance.

From Science Magazine • Nov. 22, 2017

The Red Planet showing the Valles Marineris canyon system across the center.

From "Spooked!" by Gail Jarrow