Officials have closed down Mount Lemmon in Tucson because of overcrowding.
Monday has seen a long line of cars all day as visitors try to get to the mountain.
The top of the mountain has snow and is popular with families and hikers.
The Pima County Sheriff's Department says the road leading to the mountain will be closed the rest of the day.
Mt. Lemmon CLOSED for the remainder of the day due to overcrowding.
— Pima County Sheriff (@PimaSheriff) December 26, 2016