The Making Of a Martian Transportation  Tube  Or Industrial Type Tubes?

​1.
​https://mars.jpl.nasa.gov/msl-raw-images/msss/02667/mhli/2667MH0001630001001641T01_DXXX.jpg
​
2.
https://mars.nasa.gov/raw_images/780331/?site=msl#.XjwGGiEpXCo.mailto


​

These links have been broken and they no longer exist but I promise you that the images are the real deal as for as being from the Nasa website about Mars!

Mars Tubes
This is a slide show of mars tubes, you can click on the link of the images and go to the url for the image.  Here are some more links to mars tubes:
http://www.msss.com/moc_gallery/e07_e12/full_jpg_map/E12/E1203186.jpg
http://www.msss.com/moc_gallery/ab1_m04/jpegmaps/M0400291.jpg
http://www.msss.com/moc_gallery/m07_m12/maps/M11/M1104220.gif
http://www.msss.com/mars_images/moc/june2000/gorgonum/gorgonum_c100.jpg
http://www.msss.com/moc_gallery/m19_m23/full_jpg_map/M21/M2101816.jpg
http://www.msss.com/moc_gallery/ab1_m04/jpegmaps/M0400291.jpg
http://ida.wr.usgs.gov/fullres/divided/m04002/m0400291a.jpg
http://www.msss.com/moc_gallery/ab1_m04/maps/M0201270.gif
http://www.msss.com/moc_gallery/ab1_m04/maps/M0300102.gif
http://www.msss.com/moc_gallery/ab1_m04/images/M0400291.html