This is near where they have some jumps for the horses. Whats left of it is covered in yellow furze. However I think most of it has been destroyed and they have a storage area for horse-trailers etc.
This is shown as being on the bend of the curragh racecourse, funnily enough any time your watching racing from the curragh you never see the horses jumping over a barrow. There is no sign of this at ground level.