[Balding_Eagle]

but the massive evidence of canals (terra-forming?) is quite stupendous.

That is very true, the word stupendous barely covers it.

Now if the author had only thought a moment before jumping to a mathematical conclusion which is clearly nutso, to use a scientific word.

Nonetheless, I think the real story would still be stupendous.

[cripplecreek]

More straight lines. These in Central Australia.

[Fred Nerks]

People look for explanations based upon the familiar. That doesn't always work. Who and for what reason would create this, in an ancient lake bed?

If you follow this on Google Earth, it spreads out over an incredibly large region, what you see here is just a small, concentrated portion.