Phoenicis Lacus quadrangle
The Phoenicis Lacus quadrangle is one of a series of 30 quadrangle maps of Mars used by the United States Geological Survey (USGS) Astrogeology Research Program. The Phoenicis Lacus quadrangle is also referred to as MC-17. Parts of Daedalia Planum, Sinai Planum, and Solis Planum are found in this quadrangle. Phoenicis Lacus is named after the phoenix which according to myth burns itself up every 500 years and then is reborn.
Image of the Phoenicis Lacus Quadrangle (MC-17). Most of the region includes the Tharsis plateau. The northwest contains Pavonis Mons and Arsia Mons, the east contains Syria Planum, the northeast includes Noctis Labyrinthus and the south-central part includes Claritas Fossae.
Part of Noctus Labyrinthus, as seen by Themis in the day Arrow points to area that will be enlarged. Red box shows the region covered by a CTX image which follows.
Part of Noctis Labrynthus as seen by CTX Box shows the area covered by the following HiRISE image
North and south walls of part of Noctis Labyrinthus, as seen by HiRISE under HiWish program
Tharsis is a vast volcanic plateau centered near the equator in the western hemisphere of Mars. The region is home to the largest volcanoes in the Solar System, including the three enormous shield volcanoes Arsia Mons, Pavonis Mons, and Ascraeus Mons, which are collectively known as the Tharsis Montes. The tallest volcano on the planet, Olympus Mons, is often associated with the Tharsis region but is actually located off the western edge of the plateau. The name Tharsis is the Greco-Latin transliteration of the biblical Tarshish, the land at the western extremity of the known world.
MOLA topography of the Thaumasia Plateau (Syria-Thaumasia block) and southern Tharsis. The volcano shown at the left is Arsia Mons. Valles Marineris extends across the northern edge. The areas in brown have the highest elevations on the Tharsis Plateau and may be considered the "summit region" of the Tharsis bulge.
Orographic water ice clouds hover over the volcanic peaks of the central Tharsis region in this color image mosaic from Mars Global Surveyor. Olympus Mons dominates at upper left. At center are the three Tharsis Montes: Arsia Mons at bottom, Pavonis Mons at center, and Ascraeus Mons at top.
Images of ice water clouds over Tharsis taken by the ExoMars Trace Gas Orbiter, 2016