Aboriginal leaders are urging the Tasmanian government to rule out reopening 4WD tracks on culturally significant land in the state's rugged northwest.
A cultural assessment report found a proposal to allow off-road vehicles on three tracks in the Arthur-Pieman Conservation Area does not minimise risk to Aboriginal heritage sites.
The tracks, which contain middens thousands of years old plus stone artefacts, were closed in 2012.
The Liberal government pledged to reopen them during the 2014 election campaign and had a legal challenge against the closure dismissed in the Federal Court two years later.
"This report ... I think it will kill the idea that these areas should be subjected to 4WDs. The government doesn't really have anywhere to go," Aboriginal Land Council chairman Michael Mansell told AAP.