The rain in Spain falls mainly on the plain. The rain in Spain falls mainly on the plain. The rain in Spain falls mainly on the plain. The rain in Spain falls mainly on the plain. The rain in Spain falls mainly on the plain. The rain in Spain falls mainly on the plain. The rain in Spain falls mainly on the plain. The rain in Spain falls mainly on the plain. The rain in Spain falls mainly on the plain. The rain in Spain falls mainly on the plain.