The tip is made up of two cartilages. On most people, you can see, or at least feel, a small dent between the cartilages, right at the very tip of the nose. But when the cartilages are particularly strong, and the skin is not too thick, then you can see the outline of the entire cartilage, and you can see the groove in the middle that is *between* the two cartilages. On either side of the groove, the cartilages bulge out. In a rhinoplasty operation, those cartilages would be modified to make them less prominent and very much decrease the dent between the cartilages. The woman whose before and after photos I posted with this answer had a more obvious version of what you're seeing in your own nose. Those cartilages are also responsible for holding the tip out forward in projection, away from your face, and they're also responsible for holding the tip down, so when the cartilages are prominent like yours, the operation usually also involves elevating the tip and bringing the entire nose back closer to your face. Don't have filler to fill in the dent. That would make your nose look bigger, and you'd probably hate it. Finally, remember that rhinoplasty is an exquisitely difficult operation to get right, and you should only have surgery if you are able to make yourself very confident in your surgeon's skills. The changes that your nose needs require advanced techniques, and skill that most plastic surgeons don't possess with expertise. It's much better to not have surgery than to have inexpertly-performed surgery.