The Taku River Tlingit First Nation in Atlin, B.C., says the Yukon government is breaking the law by building a campground at Atlin Lake.

Spokesperson John Ward says the site is part of a land claim the First Nation has filed with the federal government and Yukon's position that it can develop what it wants on the Atlin Road is wrong.

Atlin lake map

A government map shows the location of the proposed 112-hectare campground at Atlin Lake. The new campground will include about 55 camping sites, with construction expected to begin this summer. (CBC)

"The Yukon government feels that their own policies and decisions supersede the Canadian constitution, so this government needs to shape up and start believing in the Canadian constitution if they want to continue being part of Canada," he said.

Ward says the First Nation has sent a letter to the federal minister of Aboriginal Affairs and Northern Development laying out its concerns. It's also looking at legal action.