The average erect penis is about than the average vagina.
The mucosa is made up of specialized cells that secrete a lubricating fluid, which helps the vaginal walls to stretch.
If a person thinks their vagina feels different after childbirth, a doctor may recommend Kegel exercises, which involve squeezing and releasing the muscles used to control urination to help strengthen the pelvic floor.
It has been the site of a massive copper extraction since 1906, an operation that has expanded some 1,900 acres.
The Berkeley Pit is a former copper mine that now stretches more than 1,700 feet deep.
The hole is about 230 feet wide and 66 feet deep, and has been since Soviet geologists first ignited it while drilling for gas.