It is very difficult to tell what type of scar it is based on the picture. In fact, the thing you are calling a scar actually looks like a bump in the picture. Regardless, if there is a depression, injectable filler can nicely improve or correct that type of scar. If it is more pock-like or pitted, then some type of resurfacing and destructive (ie. electrosurgery, punch excision) technique may be required.
Web reference: http://www.barnettdermatology.com/treatments.php?id=24