YELLOWSTONE NATIONAL PARK — A new fire discovered east of Yellowstone Lake has closed the Brimstone Bay campsite 5E4 until further notice.

The 0.5-acre Brimstone Fire was detected Monday afternoon. It was likely caused by lightning and is burning in a spruce and fir forest.

Fire activity is low enough that the Thoroughfare Trail remains open for now. Hikers can check the current trail status at Backcountry Situation Report.

The Greater Yellowstone area is a fire-adapted ecosystem. Fire plays an important role in maintaining the health of this area’s wildlife habitat and vegetation. Fire staff will monitor the Brimstone Fire.