The lava tubes of Mars are future Martian cities. Robert Zimmerman

Sep 04, 02:50 AM
Image:  This image from NASA Mars Reconnaissance Orbiter shows a lava channel, which lies just to the east of the largest volcano in the solar system: Olympus Mons. 

Robert Zimmerman, BehindtheBlack,com, in re: Surface of Mars: lava tubes.  The lava tubes of Mars are future Martian cities.  Black holes in orbit around each other; spiral in to each other according to Einstein’s physics.    However, 85 solar masses is considered too large for the physics, should not exist; but one has been found.   https://behindtheblack.com/behind-the-black/points-of-information/the-longest-lava-tube-in-the-solar-system/