To: SunkenCiv
Lava tube buried in the sand would be my guess. I know similar caves have been spotted elsewhere on mars.
Personally I think canyons and caves are the places we really need to look but its easier to land on open plains.
4 posted on
07/18/2012 3:27:42 AM PDT by
cripplecreek
(What does it profit a man if he gains the whole world but loses his soul?)
To: cripplecreek
Lava tube buried in the sand would be my guess. Exactly what I was going to say. Once the lava passes through, it leaves behind a tunnel.
23 posted on
07/18/2012 5:00:09 AM PDT by
ETL
(ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
To: cripplecreek
“The hole was discovered by chance on images of the dusty slopes of Mars’ Pavonis Mons volcano”
25 posted on
07/18/2012 5:04:27 AM PDT by
ETL
(ALL (most?) of the Obama-commie connections at my FR Home page: http://www.freerepublic.com/~etl/)
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