National Parks' get-out-of-jail-free card in High Court

Traditional owners and the Aboriginal Areas Protection Authority are appealing in the High Court. (Mick Tsikas/AAP PHOTOS)

Traditional owners from Kakadu are questioning the integrity of joint-management with National Parks, if their voices are ignored on sacred sites.

The High Court is considering this week whether the Commonwealth can rely on "crown immunity" to avoid criminal penalties for damaging sacred sites in the Northern Territory.