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Firefighters are making headway against a blaze in Theodore Roosevelt National Park in North Dakota, according to a report by the Associated Press.

The fire in the park’s North Unit tripled in size on Sunday, threatening park staff housing, maintenance buildings and the CCC Campground. North Dakota Forest Service Acting Outreach and Education Manager Beth Hill said Tuesday that the blaze is 45% contained.

But she said the fire has consumed about 5,000 acres, or nearly eight square miles. The campground, other infrastructure and some private homes on the fire’s north end remain at risk.

Federal forestry officials have closed more areas in the park, including the CCC Campground, Summit Campground, several trails and the Summit Overlook, Beth said.

They also have issued emergency restrictions on fires and shooting in all national forest lands in a host of North Dakota counties since conditions are ripe for fires.

Wildfires have burned more than 47 square miles in North Dakota this spring. Fewer than 15.6 square miles burned all of last year.