How to realse a desert?

[lior]

I'd like to know to realise a desert like this one

http://image.guardian.co.uk/sys-images/Travel/Pix/gallery/2001/02/05/corbisdesert.jpg
I saw http://perso.orange.fr/darthmagus//canyongeocontrol.html that's to say a canyon with GeoControl so what about a desert with geocontrole?

I begin to undertand GC ,I realsided this picture (http://www.supernature6000.com/zicimg/albums/userpics/10001/valley-reUP.jpg) thanks to GC ;)

Thank you for your technical support :)

[cajomi]

look here for dunes:
http://cajomi.de/Forum/showthread.php4?t=85

If you now combine yours and the preset, you should get a really good desert

[Darthmagus]

I get a landform like your photo.

[lior]

I get a landform like your photo.
I wish to thank you very...very much ;)