Answer:
upper thigh
"The femoral vein is located in the upper thigh and pelvic region of the human body. It travels in close proximity to the femoral artery. This vein is one of the larger vessels in the venous system.
The femoral vein is a large vessel located deep within the thigh. It is sometimes referred to as the superficial femoral vein in order to distinguish it from the deep femoral vein.