alaldrid - welcome to the site. The raised section you're pointing out is often referred to as a 'stack'. It's exactly what bsit said, it's where a handful of flakes have terminated as the knapper what first trying to thin the point and second, probably trying to remove the stack. Some stacks are small and hardly noticeable, some are large, but they're fairly common on points.
I often find scrapers with "stacks". (Thanks for the new lingo fellas.) I guess it's the same type deal. My interpretation of these have always been cores that were still of some use, as long as the person working the piece was careful not to reduce too much from the remaining lithic. I may be wrong, or possibly have two situations mixed up. Either way, they are great finds.
Is it al Ala point? Jacks reef is right if that is where you are. I have some somewhere and a girl I was hunting with picked up the best one I have ever seen. Nice point even with the stacks.
The point was found in the southern piedmont of NC next to Rocky river which runs into the Pee Dee River on a well maintained farming road . This is the only point I have like this. I think in NC it is called a Pee Dee point but Jacks Reef elsewhere. Thanks everyone for all of the help.