The man's body was discovered around noon Sunday by two people walking a dog.
State Police say there were no obvious signs of trauma and that an autopsy was unable to determine the cause and manner of death.
Investigators released a sketch of the man Monday hoping the public can help identify him, since he had no identification on him when he was found.
The victim is described as a Hispanic man between the ages of 50 and 60, 5'5" to 5'8" tall, and between 130 and 165 pounds.
If you have any information on the man's identity you are asked to contact State Police at 609-296-3132.