Dakar 2007 back brake line needs to be replaced.

[Gulp]

The brake line that runs from the back brake calipers and disappears between the swing arm , looks like it is holed and leaks badly!
not sure if its the large line or thin line. will need to strip to confirm, any one experinced this, done this?
and were can i get a brake line from should it need replacing?

 

[Pete HK]

 

[Corne]

 

[Gulp]

 

[Gulp]

 

[lecap]

 

[Gulp]

 

[lecap]