Note the slumped section in a distant part of the mound.
With gravity at a minimum we should ask for other explanations for this feature.
In CRT experiments we have seen that electric discharge of the surface involves
undermining material with electric forces which facilitates material displacement.
An electric wind is an important component of Electric Discharge Machining (EDM).
The paralell paths have a counterpart at the surrounding canyon walls.
The filamentary coronal paths radiating perpendicularly from the ridge seem
to be involved in sculpting the scallops on adjacent walls of the canyon.