Lots of sedimentary rock, erosion and creek beds.
There is water beneath the surface.
The next mission must include sonic measures of the subsurface, and once it’s found, drilling.
When and how did Mars lose its water? And, are there organisms in the water below surface?
And if so, is their biology consistent with Earth’s?
Fascinating.
If they find microbes in the water, then it will be declared as a protected/endangered wetland or something and sealed off.
The InSight mission is recording sound and seismic activity.
It will hear tremors from any earthquakes or meteor impacts and slowly build a 3D image of the subsurface as the sounds will come from many different directions. https://twitter.com/hashtag/SoundsOfMars?src=hash&ref_src=twsrc%5Etfw%7Ctwcamp%5Eembeddedtimeline%7Ctwterm%5Eprofile%3ANASAInSight&ref_url=https%3A%2F%2Fwww.nasa.gov%2Fmission_pages%2Finsight%2Fmain%2Findex.html