The Government has opened up much of the volcanic plateau for gold and silver prospecting, including one of the largest tracts of native forest left in the North Island.
The Ministry of Business, Innovation and Employment's petroleum and minerals department said it was seeking tenders for exploration permits for more than 8000sq km of the Central Volcanic Zone across the Bay of Plenty and Waikato.
The area is known to contain epithermal-style gold and silver deposits in both extinct and active geothermal fields, according to David Binnie, general manager of NZ Petroleum & Minerals.
Although the area tagged for exploration includes conservation land, Mr Binnie said any Schedule 4 areas were excluded. But the Green Party pointed out the area included the Pureora Forest Park, west of Lake Taupo, which does not have Schedule 4 protection.
"The Government should not be tendering for mineral exploration permits in this precious place" Green Party mining spokeswoman Catherine Delahunty said. "The Pureora forest is some of the best lowland forest remaining in the North Island. The majority of the ancient totara trees remaining in New Zealand are found in Pureora."