Holes on Mars

The High Resolution Imaging Experiment (HiRISE) camera operated at The University of Arizona released this new view of the dark pit on Arsia Mons (PSP_004847_1745) today. This view is not the entire HiRISE image, but a close-up of the pit on the Arsia Mons volcano. The new image confirms that the dark pit really is a vertical shaft that cuts through lava flow on the flank of the volcano. Such pits form on similar volcanoes in Hawaii and are called "pit craters." (Credit: NASA/JPL/University of Arizona)

Link - http://uanews.org/node/15715




http://apod.nasa.gov/apod/image/0709/PSP_004847_1745_cut_b720.jpg
http://apod.nasa.gov/apod/ap070928.html
http://hirise-pds.lpl.arizona.edu/PDS/



http://www.newscientist.com/article/dn12566
http://www.marsanomalyresearch.com/evidence-reports/2007/121/mars-dark-hole.htm






http://mars.jpl.nasa.gov/odyssey/gallery/martianterrain/images/20070921_Cave_02.jpg
http://mars.jpl.nasa.gov/odyssey/gallery/martianterrain/20070921_Cave_02.html#allimages
http://mars.jpl.nasa.gov/odyssey/newsroom/pressreleases/20070921a.html

Today's set of image releases from the Mars Reconnaissance Orbiter HiRISE team included this one, of a fairly bland-looking lava plain to the northeast of Arsia Mons. Bland, that is, except for a black spot in the center. What's that black spot? It's a window onto an underground world.



http://www.planetary.org/image/PSP_003647_1745_RED_4m.jpg





Cave entrance on the flank of Arsia Mons
In this HiRISE image captured on May 7, 2007, a black spot mars the flank of Arsia Mons. The spot is most likely a skylight onto a subterranean cavern. Credit: NASA / JPL / U. Arizona
Link - http://www.planetary.org/blog/article/00000984/

New View of Dark Pit on Arsia Mons (PSP_004847_1745)
http://hirise.lpl.arizona.edu/PSP_004847_1745
http://hirise-pds.lpl.arizona.edu/PDS/EXTRAS/RDR/PSP/ORB_004800_004899/PSP_004847_1745/PSP_004847_1745_RED.NOMAP.browse.jpg