Activists have planted a flag at the North Pole along with millions of signatures calling for the Arctic to be declared a global sanctuary protected from oil drilling, lobby group Greenpeace said on Monday.

Expedition members cut a hole in the ice and lowered the “flag for the future” onto the seabed along with a titanium-glass capsule containing 2.7 million signatures against the exploitation of the pristine Arctic.

The flag, atop the titanium-ringed glass sphere, was lowered near where a Russian mini-submarine in 2007 controversially planted a Russian flag at the bottom of the Arctic Ocean.

The Greenpeace expedition included Hollywood actor Ezra Miller, indigenous Sami MP Josefina Skerk from Sweden and Renny Bijoux from the Seychelles, all of who trekked for a week to reach the geographical North Pole, a statement said.

“We’re here to say this special area of the Arctic belongs to no person and no nation, that it is the common heritage of everyone on Earth,” said Sami Parliament member Skerk, 26.