Traingular hollow rock on Mars

a reply to: smurfy

No sane person I would say, if you get my drift Because I got yours ^^

a reply to: Vasa Croe

It's a smaller rock in front of a larger rock...lighting and shadows explain the optical illusion pretty easily.

Looks as if it is a rock in a triangular shaped depression. Always turn the picture 180 and have another look .

a reply to: Vasa Croe

In this case, it looks like a lighter rock in front of a darker one, making it only appear as a "hole" through the triangular rock.

Pixels and shadows make some odd illusions.

Not to say there aren't unexpected things on Mars... I'm fairly confident there are... and that some have been seen, already... it's just that this one instance is (most likely) an optical illusion.

Regards.

ETA: and should've read whole thread before repeating what others already posted... apologies.

originally posted by: Vasa Croe
Ok....so this one has me baffled. How does this form naturally? It appears hollow through the center and you are able to see the rocks behind it, but I can't understand how this could naturally form in this fashion here.

Wind?

originally posted by: SlapMonkey
a reply to: Vasa Croe

It's a smaller rock in front of a larger rock...lighting and shadows explain the optical illusion pretty easily.

I agree that the "hole" may in fact be a lighter rock in front of a darker rock.

However, I still wonder if it is possible for wind erosion to make a hole on a small scale like that, similar to the way larger rock arches (such as those in arches national park in Utah) can form.