I've just seen a request for this to be tabbed, so I had a quick listen and it's pretty 
much this, below, all the way through. Just note the quick triplet -035- and the -0--3- 
which come and go. And remember to tune down to get that low D.

G|------------------------------------------------|
D|------------------------------------------------|
A|--5-5-5-5-3-5-0--------------------------0---3--|
D|--------------------------035-5-5-3-5-0---------|

I hope this helps!