🔍The couple vanished 19 months ago after going camping in Victoria's high country.
🔥Their campsite was found burned, raising suspicions of foul play.
🚁Extensive searches have been conducted, but the bodies of Russell Hill and Carol Clay have not been found.
🧩The case puzzles investigators, as there are few clues and no clear motive for their disappearance.
📞Police are appealing to the public for any information that may help solve the mystery.