This is not exactly a solo. It's the heavy Doom Metal riff that also ends the song.

Tempo = 210
Electric Guitar (The bass does the same fingering too)

Legend
~ - vibrato
. - staccato
W - wide vibrato
\ - "mute" slide (just slide your hand down in a way that it kills the note

                                                                          
E |-------|----------------|----------------------------|----------------|
B |-------|----------------|----------------------------|----------------|
G |-------|----------------|----------------------------|----------------|
D |-------|----------------|--5--6--5--3--5-----6-------|--------7--6----|
A |--5~---|--6--3--5~------|----------------------------|--6--5----------|
E |-------|----------------|----------------------------|----------------|

        w
----------------|----------|----------||
----------------|----------|----------||
----------------|----------|-----2~---||
----------------|-----3~---|--4~------||
--6--3--3~\-----|--6~------|----------||
----------------|----------|----------||