Police are trying to identify the body of a man found lying near the A303, Chilmark, on Thursday.
Wiltshire Police say a member of the public contacted them after the body was found in a field off Cow Drove.
The man, believed to be in his 40s, is described as lean but muscular with greying hair, 5ft 10 ins tall with a prominent, slightly crooked nose.
Police say they are still uncertain how the man died or how his body ended up in the field.
Police have released images of a necklace and t-shirt logo the man was wearing.
They are appealing for anyone with information to contact them.