The problem with assigning the pits of which I spoke (and these pits are different than the ones you refer to in your earlier post, which do indeed occur in a non-linear fashion) to any kind of magma flow is that they occured linearly and this line of occurence crossed multple "fault" lines.

That's a pretty good trick for a magma flow!

I really, really like Hoffman'ss hypothesis of CO2/water as the working fluid for the processes observed on Mars. It seems to explain so much. Take your line of pits, where they are not linear and right hand turns are observed. If you have buried impact craters, and you will have earlier impact craters buried both by later impact debris and by sediments formed during periods when volatiles have been released from the surface of Mars by massive impacts, (there is no sub-duction), then the working fluid will follow these density differences.

For the linear pit case, it's the depth of the features that prevent the use of lava tubes or lava flows as an explanation - there is no sign of surface lava flows OVER the faults.

I am currently finding contemplating these images very relaxing. Consider what frees up the CO2/water in different cases, as there are different causes, with Mars' lithosphere being far distant from some kind of Platonic ideal...

ep