The pineal gland is located in the center of the brain, behind and above the pituitary gland. Because the pineal is bathed in highly charged cerebrospinal fluid (CSF) and has more blood flow per cubic volume than any other organ, it may well be the gland with the highest concentration of energy in the body. In addition to its high concentrations of CSF and blood, the pineal gland is also the dominant source of the body's melatonin.