Depending on the time of year you go, make sure you get a reservation: https://www.nps.gov/arch/planyourvisit/permitsandreservations.htm https://www.nps.gov/arc

Depending on the time of year you go, make sure you get a reservation: https://www.nps.gov/arch/planyourvisit/permitsandreservations.htm https://www.nps.gov/arch/planyourvisit/permitsandreservation...