El Capitan (Mars)

Last updated September 12, 2025

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El Capitan
El Capitan rock outcrop at Meridiani Planum, Mars
Feature type	Rock outcrop
Coordinates	1°54′S354°30′E / 1.9°S 354.5°E / -1.9; 354.5

El Capitan is a layered rock outcrop found within the Margaritifer Sinus quadrangle (MC-19) region of the planet Mars, this geological outcrop was first discovered and observed by the Mars Exploration Rover Opportunity in February 2004. The rock outcrop was named for El Capitan, a topographical mountain lying within the state of Texas.

External links

Nasa's Mars Exploration Program

v t e Features on Mars visited by Opportunity
List of surface features of Mars visited by Spirit and Opportunity
Craters	Argo Eagle Fram Endurance Vostok Naturaliste Erebus Beagle Emma Dean Victoria (Cape Verde) Santa Maria Endeavour
Endeavour	Cape York Solander Point Cape Tribulation
Rocks (list)	Block Island meteorite Bounce Rock El Capitan Heat Shield Rock Last Chance Mackinac Island meteorite Oileán Ruaidh Shelter Island meteorite Martian spherules
Mars Exploration Rover Timeline of Opportunity

Mars

Outline of Mars

Geography

Atmosphere	Circulation Climate Dust devil tracks Methane
Regions	Arabia Terra Cerberus (Mars) Cydonia Eridania Lake Iani Chaos Olympia Undae Planum Australe Planum Boreum Quadrangles Sinus Meridiani Tempe Terra Terra Cimmeria Terra Sabaea Tharsis Undae Ultimi Scopuli Vastitas Borealis
Physical features	"Canals" (list) Canyons Catenae Chaos terrain Craters Fossae Gullies Mensae Labyrinthi Mountains by height Observed rocks Outflow channels Plains Valley network Valleys Gravity
Geology	Brain terrain Carbonates Chaos terrain Color Composition Concentric crater fill Dark slope streak Dichotomy Fretted terrain Geysers Glaciers Groundwater Gullies Lakes Lava tubes Lobate debris apron Marsquake Meteorites on Earth on Mars Mud cracks North Polar Basin Ocean hypothesis Ore resources Polar caps polar wander Recurring slope lineae (RSL) Ring mold craters Rootless cones Seasonal flows Soil Spherules Surface "Swiss cheese" feature Terrain softening Tharsis bulge Volcanism Water Yardangs
History	Amazonian Hesperian Noachian Observation history Classical albedo features

Astronomy

Moons	Phobos Stickney crater Limtoc crater Monolith Deimos Swift crater Voltaire crater
Transits	Solar eclipses on Mars Satellite transits Phobos Deimos Planetary transits Earth Mercury
Asteroids	Impacts Mars-crossers 2007 WD5 Trojans 5261 Eureka 1998 VF₃₁ 1999 UJ₇ 2007 NS₂
Comets	C/2013 A1 (Siding Spring)
General	Orbit

Exploration

Concepts	Flyby Orbiter Landing Rover Sample return Human mission Permanent settlement Colonization Terraforming
Missions	List of missions to Mars
Advocacy	The Mars Project The Case for Mars Inspiration Mars Foundation Mars Institute Mars Society Mars race

Category
Solar Systemportal

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El Capitan (Mars)

See also

External links