Its nickname is Ciudad de los Bellos Atardeceres ( English , `` City of the Beautiful Sunsets '' ) because there are no mountains to the west of the city and it is common to see a `` red '' sky during the sunset ; it is a very dry region and there is much dust in the air which gives the sky a red color .
Its nickname is Ciudad de los Bellos Atardeceres ( English , `` City of the Beautiful Sunsets '' ) because there are not mountains to the west of the city and it is common to see a `` red '' sky during the sunset ; it is a very dry region and there are much dust in the air which gives the red color to the sky .