The volcano remains volatile and DoC's risk assessment has included looking at where previous eruptions have catapulted rocks to in order to decide if it is safe for certain tracks to be reopened.
"Te Maari could still erupt at any time with little or no warning," DoC said in its latest update.
"A great alternative scenic walk for keen trampers is the southern section of the Tongariro Northern Circuit between Whakapapa Village through to the Waihohonu Hut, including the Tama Lakes or further through to the Desert Rd.
"DoC is very aware of the economic impact on local communities of having the Tongariro Alpine Crossing closed. While wishing to reopen the track as soon as possible, public safety remains the paramount concern," the department said.
Barriers on Mangatepopo Rd may also be removed by Thursday.