Where is hymen of the unmarried girl located exactly? Where hymen located inside or outside of the vagina?? Plzz tell me briefly with pictures pllzz

It is the front door. The hymen, if present forms the entrance to the vagina.It can form in a way that totally covers the entrance with no opening for menstrual blood to exit. This produces problems in puberty.It can also disappear in a fetus or be lost in early childhood .You should expect to find it about a half inch deep inside if the labia minora. You can find pictures with a search engine.