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Lingua Marsica To aid you in your Mars explorations, here is a short list of definitions for the geographical names on Mars. CATENA: Chain of craters CAVUS: Hollows, irregular depressions CHAOS: Distinctive area of broken terrain CHASMA: Canyon COLLES: Small hill or knob CORONA: Ovoid-shaped feature DORSUM: Ridge FACULA: Bright Spot FLEXUS: Cuspate linear feature FLUCTUS: Flow terrain FOSSA: Long, narrow, shallow depression LABES: Landslide LABRINTHUS: Intersecting valley complex LACUS: Lake LINEA: Elongate marking MACULA: Dark spot MARE: Sea MENSA: Mesa, flat topped elevation MONS: Mountain OCEANUS: Ocean PALUS: Swamp PATERA: Shallow crater; scalloped, complex edge PLANITIA: Low plain PROMONTORIUM: Cape REGIO: Region RIMA: Fissure RUPES: Scarp SCOPULUS: Lobate or irregular scarp SINUS: Bay SULCUS: Subparallel furrows and ridges TERRA: Extensive land mass TESSERA: Tile; polygonal ground THOLUS: Small domical mountain or hill UNDAE: Dunes VALLIS: Sinuous valley

File Not Recognized It has come to our attention that some of these VPR DEM files do not have a suffix map in their file name and this might cause VPR not to initially recognize them. To fix this, just add ".dem" to the end of the file name. For example: "FileName.dem" This will allow your system to recognize this file as a VPR DEM file and request that VPR launch with the file. Zoom In On Map Any of these VistaKit/WorldKit maps you find here can be zoomed in with the tools in the screen or by clicking and dragging over the area you would like to zoom in on. As you drag on the screen, a red square should appear over your magnification area. Seeing Cluster of Hotspots Clusters of hotspots just mean that portions of these maps have more details VPR DEMs in any given region. You can use the instructions above to zoom into that area and see each defined hotspot more clearly.