And his ghost may be heard...

[neufer]

<<Billabong: Australian English word meaning a small lake, specifically an oxbow lake, a section of still water adjacent to a river, cut off by a change in the watercourse, cf. an oxbow lake. Billabongs are usually formed when the path of a creek or river changes, leaving the former branch with a dead end.>>

• Up jumped the swagman and sprang into the billabong,
  "You'll never take me alive", said he,
  And his ghost may be heard as you pass by that billabong,
  "You'll come a-Waltzing Matilda, with me".

A radar on NASA's Mars Reconnaissance Orbiter has detected widespread deposits of glacial ice
in the mid-latitudes of Mars. NASA/JPL-Caltech/ASI/University of Rome/Southwest Research Institute

http://en.wikipedia.org/wiki/Oxbow_lake

[bystander]

Radar Map of Buried Martian Ice Adds to Climate Record
NASA JPL PR 2010-072 - 2010 March 02

Extensive radar mapping of the middle-latitude region of northern Mars shows that thick masses of buried ice are quite common beneath protective coverings of rubble.

The ability of NASA's Mars Reconnaissance Orbiter to continue charting the locations of these hidden glaciers and ice-filled valleys -- first confirmed by radar two years ago -- adds clues about how these deposits may have been left as remnants when regional ice sheets retreated.

The subsurface ice deposits extend for hundreds of kilometers, or miles, in the rugged region called Deuteronilus Mensae, about halfway from the equator to the Martian north pole.

PIA12861: Glacial Ice Deposits in Mid-Latitudes of Mars

[neufer]

The subsurface ice deposits extend for hundreds of kilometers, or miles, in the rugged region
called Deuteronilus Mensae, about halfway from the equator to the Martian north pole.

Isn't Deuteronilus Mensae one of Harry Potter's arch-nemensae?

• --------------------------------------------------------------
  . Antony and Cleopatra > Act II, scene VII
  
  MARK ANTONY: The higher Deuteronilus swells,
  . The more it promises: as it ebbs, the seedsman
  . Upon the slime and ooze scatters his grain,
  . And shortly comes to harvest.
  .........................................................
  . Antony and Cleopatra > Act V, scene II
  
  CLEOPATRA: On Deuteronilus' mud
  . Lay me stark naked, and let the water-flies
  . Blow me into abhorring!
  --------------------------------------------------------------

http://en.wikipedia.org/wiki/Deuteronilus_Mensae