The body was discovered around 4:00 p.m. Saturday just off M Y Lane near New Lincoln Highway.
Tracey Hovemeyer says she and her husband were walking a trail when she spotted the body in a tarp.
"I told him, 'Look at this, it looks strange like someone covered a dog.' He went over there and looked and said, 'Oh my God! Oh my God! It's a body," said Hovemeyer.
The Bucks County District Attorney's office brought in a mobile command unit and police went to work.
Authorities say the deceased suffered a single gunshot wound to the mouth and that the remains are estimated to have been there for four to five months.
As far as the identity of the deceased, authorities say the remains appear to be that of a white male, 40-50 years of age and approximately 6'1" tall, with teeth in poor condition. The person was wearing cargo shorts, a tank top, a short sleeved t-shirt, white Adidas brand sneakers (size 11), socks, a beige colored Champion brand baseball style hat with a red capital letter "Z" on the front and metal framed sunglasses with oversized yellow tinted lenses.
There's not much on the property, which sits at this end of a no outlet road next to New Jersey Transit train tracks.
Police say Haddonfield Lumber was the last business here more than three years ago and it's been abandoned and up for sale since.