Normally, only the road between Yellowstone’s North Entrance at Gardiner, and the Northeast Entrance near Cooke City, Mont., are open all year to vehicles. But with the arrival of spring — weather permitting — Yellowstone crews will open the West Entrance located at West Yellowstone to the public Friday.

For decades, scientists knew magma was simmering beneath the earth at Yellowstone National Park. A team of researchers recently found out how deep.