sol 67 OM pan of AFM grid:

If I were choosing an AFM subject, I would target the whitish, radially symmetric feature in the center. Notice is seems to have a whitish "tail".
Winston, re: Earth soil and filaments. That's what I thought.
Why are the rock guys being so, er, hard headed, about the soil filaments?
The issue is not one of belief but of observation.
Perhaps Mars is as dead as the Antarctica dry valleys, or the Pacific abyssal zone and there is no possibility of life - er, bad examples.