The Australian Greens fear Aboriginal burial sites north of Broome will be destroyed unless the Gillard government stops Woodside moving in heavy machinery near a controversial gas hub site.
The Senate was told on Tuesday the energy giant was preparing to move equipment onto sand dunes near the James Price Point site.
Woodside's proposed $30 billion Kimberley gas hub has divided the community.
Greens leader Christine Milne urged the government to step in to prevent sacred sites being damaged while the Environment Minister Tony Burke decides whether to grant an emergency heritage listing.
Leader of the government in the Senate, Stephen Conroy, said Mr Burke would make a decision when the assessment process was complete.
"The Western Australian state election deadlines are irrelevant to his decision," Senator Conroy