The foramen magnum is located at the base of the skull. It is a large opening that allows the spinal cord to connect with the brain. Serving as a passageway, the foramen magnum provides a conduit for vital structures, such as nerves and blood vessels, to pass between the brain and the spinal cord. It plays a crucial role in facilitating communication and coordination between the brain and the rest of the body, making it an essential anatomical feature for proper neurological functioning.