The homicide of Tina Barron has been added to Nova Scotia's Rewards for Major Unsolved Crimes Program.
Baron was reported missing on Oct. 6, 1985.
Her remains were found in a wooded area in Shubenacadie, near Indian Brook, on Nov. 4, 1985, just days before her 17th birthday.
"Our hope is that by having this case added, information may come to light that may help us solve this case," said RCMP Cpl. Jennifer Clarke in a news release.
Anyone with information is asked to call Nova Scotia's Rewards for Major Unsolved Crimes Program at 1-888-710-9090.
"This family deserves answers as they continue to grieve the loss of their loved one," said Justice Minister Mark Furey. "I strongly encourage anyone with information about this crime to come forward and tell police."
All calls to the program will be recorded and those with information will need to provide their name, contact information and may be called to testify in court.
Tips leading to an arrest and conviction of the person or persons responsible are eligible for a reward of up to $150,000.