The second alternative would be to use injection piles.

Shall we go see the dunes?

In a desert plain in Tanzania, in the shadow of the volcano Ol Doinyo Lengai, there's a dune made of volcanic ash.

The beautiful thing is that it moves bodily.

As I said earlier, it looked very much like Earth, so you see sand dunes.

If you want to see the dunes, Dr. Chapuis is going.

It adds roughness to the dune's surface, to the texture of the dune's surface, binding the grains.

And you can notice they have created a kind of false catchment.

This is where the village used to be.

OK, so this is our movie of the equatorial region of Titan, showing these dunes.

Yesterday, you promised we would go see the dunes together.

I was told you are going to the dunes and as I missed the bus ....

They love Namibia for its beautiful dunes, that are even taller than the Empire State Building.

We can start harvesting condensation, and start greening the desert from within.

But before I do, I just want to mention that this animal truly is a sort of the SUV of the sand, the ship of the desert.

It's what's technically known as a barchan, and the entire dune walks across the desert in a westerly direction at a speed of about 17 meters per year.

What happens is that the wind blows the sand up the shallow slope on the other side, and then, as each sand grain hits the top of the ridge, it cascades down on the inside of the crescent, and so the whole horn shaped dune moves.

Let's get back to the town and walk to the site.

So, we pushed the piles down through the dune, and we create an initial bacterial surface.

(Video) Virtual Choir The evening hangs beneath the moon A silver thread on darkened dune With closing eyes and resting head I know that sleep is coming soon Upon my pillow, safe in bed, a thousand pictures fill my head I cannot sleep my mind's aflight and yet my limbs seem made of lead If there are noises in the night

In the hills?

I found him on the hill...

This is the Saharan desert of Titan.

And you turn around, and there's a hillside behind you with a neighborhood going in, and bulldozers are pushing piles of soil back and forth.

Some of those grains may then accumulate on a massive scale, into a sand dune.

So, there it is architectural anti desertification structures made from the desert itself.

Gold!

The way it does this is it comes out at night, crawls to the top of a sand dune, and because it's got a matte black shell, is able to radiate heat out to the night sky and become slightly cooler than its surroundings.

Nothing, sir. It's the hills.

I don't know any ObiWan... but old Ben lives out beyond the Dune Sea.

In high empyrean

In a lofty Garden

in a lofty Garden,

In a Garden lofty.

In a lofty Paradise,

In a lofty Garden.

in a lofty Garden

In a high garden

in an elevated garden,

in a high Garden,

In an elevated garden,

in an exalted garden

In a lofty garden,

in a lofty garden,

In a Garden on high,