Arsia Mons is an extinct shield volcano in the Tharsis region near the equator. It is part of the Tharsis Montes group of volcanos. Its location is 8.35 S and 120.09 W (239.91 E) in the Phoenicis Lacus quadrangle. Its name is a classical feature name and comes from a corresponding albedo feature on a map by Giovanni Schiaparelli, which he named in turn after the legendary Roman forest of Arsia Silva. Researchers have found much evidence for glaciers on Arsia Mons. 
Seven cave entrances have been discovered on the sides of Arsia Mons. These caves could contain reserves of water ice or even life. They are possible locations for a cave settlement. With the low gravity of Mars, lava tubes may be over 800 feet in width. A lave tube on Mars could protect colonists from meteorites and radiation. Because of the lack of a magnetic field at present, mars has a fair amount of radiation, especially from cosmic ray sources. A mini-series produced by National Geographic in 2016 depicted how people could establish a base in a cave. 
- Scanlon, K., J. Head, D. Marchant. 2015. REMNANT BURIED ICE IN THE ARSIA MONS FAN-SHAPED DEPOSIT, MARS. 46th Lunar and Planetary Science Conference. 2266.pdf
- "Recent glaciation at high elevations on Arsia Mons, Mars: Implications for the formation and evolution of large tropical mountain glaciers" (PDF) (2007). Journal of Geophysical Research 112 (E3). doi:10.1029/2006JE002761. Bibcode: 2007JGRE..11203004S.