Ellen Anderson, Lake Mead National Recreation Area http://www.nps.gov/lame/ Field trips are scheduled each year on a first come, first served basis through a reservation packet mailed to each grade level chair (1st - 5th Grade) at the beginning of the school year. Teachers who have attended our 16 hour workshop "My Home is the Mojave Desert" get priority in scheduling. For more information call the Environmental Education office at (702) 293-8716 or contact your grade level chair at the beginning of school.