As with all my projects, I did a lot of research beforehand. I used this pattern at first, then went my own way when I lost the print out.
Here is my pattern:
And it gives something that looks like this:
Sonic screwdriver for scale
I used my absolute favorite yarn, Katia's 'Peru', which is a Alpaca/Wool blend, and fantastic to work with. Using size 6 mm needles (US size 10) and a garter stitch, casting on 40 stitches, the scarf finished a little over ten feet long, and boy, this baby is HEAVY. Which is no problem in my book.
The pattern above lists a count for the ridges, as they are the knitter;s best friend for counting rows - so if you want to knit this in stockinette, just double the numbers I gave you and you should be fine.
I bought one skeen of yarn for each colour, and knit until I ran out. All the leftover tidbits I used as tassels - I have nothing left.
Now, as for the exact wool I used, here they are:
Caramel Brown: 32
And there you have it! Have fun!