{{short description|Martian volcano}} {{Infobox feature on celestial object |name = Albor Tholus |image = [[File:Albor Tholus THEMIS.jpg|200px]] |caption = ''[[2001 Mars Odyssey]]'' [[Thermal Emission Imaging System|THEMIS]] daytime infrared image mosaic |coordinates = {{coord|18.87|N|150.47|E|globe:mars_type:landmark|display=inline,title}} |coordinates_footnotes = <ref>{{gpn|166}}</ref> |type = Shield volcano }} '''Albor Tholus''' is an [[extinct volcano]] in the volcanic province [[Elysium (volcanic province)|Elysium]] on [[Mars]]. It lies south of the neighbouring volcanoes [[Elysium Mons]] and [[Hecates Tholus]]. Albor Tholus is 4.5 kilometres<ref name="geo">[http://www.planet.geo.fu-berlin.de/projekte/mars/hrsc011-AlborTholus.php HRSC Bildserie #011 - Albor Tholus (Mars Express Orbit 0032); Gruppe Fernerkundung der Erde und der Planeten an der FU Berlin<!-- Bot generated title -->]</ref> high and has a diameter of 160&nbsp;km<ref name="geo"/> at its base. Its large [[caldera]], having a diameter of 30&nbsp;km and a depth of 3&nbsp;km,<ref name="geo"/> is deep compared to calderas on the Earth. The elevation of the lowest level of the caldera is the same as the base of the volcano; however, the original lower slopes of Albor Tholus may have been covered by lava flows from its larger neighbor, Elysium Mons. Evaluations by the Mars probe [[Mars Express]] found that the volcanoes of the Elysium region were active over long periods.

<gallery> Image:MOLA albor tholus.jpg|Topography of Albor Tholus and its neighborhood. Image:Albor Tholus with THEMIS.JPG|Albor Tholus as seen by THEMIS. The area has undergone extensive faulting. </gallery>

==References== {{Reflist}}

==External links== * [http://www.google.com/mars/#lat=17.644022&lon=150.46875&zoom=2&q=Albor%20Tholus Albor Tholus with Google Mars] {{Mars}} {{Portal bar|Solar System}}

[[Category:Volcanoes of Mars]] [[Category:Mountains on Mars]] [[Category:Extinct volcanoes]] [[Category:Elysium quadrangle]]

{{Mars-stub}} {{volcano-stub}}