ESA photographs 'claw marks' on the surface of Mars

[UM-Bot]

These giant 'scratches' on the surface of the Red Planet were captured on camera by ESA's Mars Express orbiter.

https://www.unexplained-mysteries.com/news/357648/esa-photographs-claw-marks-on-the-surface-of-mars

[jethrofloyd]

The Mars Nazca Lines.

[Hyperionxvii]

Umm, those are not claw marks.

[Earl.Of.Trumps]

44 minutes ago, Hyperionxvii said:

Umm, those are not claw marks.

"... each individual trough measures 10km wide, descends 350 meters in depth and stretches for up to 1000km."

Ya know, Hyper    I'm kinds thinking you got a point. uhHuh. 

[Hyperionxvii]

On 5/15/2022 at 3:36 PM, Earl.Of.Trumps said:

"... each individual trough measures 10km wide, descends 350 meters in depth and stretches for up to 1000km."

Ya know, Hyper    I'm kinds thinking you got a point. uhHuh. 

How can  you be sure it wasn't a giant extinct Martian pterosuar? Can you prove that it wasn't?