YELLOWSTONE NATIONAL PARK, Wyo. (AP) — Yellowstone National Park officials say a head-on collision killed one person and closed a portion of the park's main roadway during peak tourist season.

Yellowstone spokeswoman Charissa Reid confirms that one person died in Friday's two-vehicle crash, but she said she did not have any additional information.

The collision happened on the Grand Loop Road near Craig Pass, about eight miles west of West Thumb.

The roadway has been closed between West Thumb and Old Faithful, one of the most trafficked corridors in the park.

Yellowstone officials say they expect the closure will last several hours Friday afternoon.

More people visit Yellowstone in July than any other month. The National Park Service says an average of 24,800 people a day visit the park over the month.