That main guitar riff off the version on B-Sides
[ Tab from: https://www.guitartabs.cc/tabs/d/damien_rice/volcano_tab_ver_3.html ]
e|---------------------------------------------------------------------------|
B|5-5------------------------5-5---------------------------------------------|
G|----7-7-5-4-2-4-2-4-5----------7-7-5-4-2/5---------------------------------|
D|---------------------------------------------------------------------------|
A|---------------------------------------------------------------------------|
E|---------------------------------------------------------------------------|
Near the end he plays a slight variation in a different key for a few measures
e|---------------------------------------------------------------------------------|
B|8-10-8-----------------------8-10-8----------------------------------------------|
G|-------10-9-7-9-7-9-10--------------10-9-7-10------------------------------------|
D|---------------------------------------------------------------------------------|
A|---------------------------------------------------------------------------------|
E|---------------------------------------------------------------------------------|
