English: During the pilgrimage "copious supplies of food, small clinics and even dentists are available for pilgrims and they all work for free. "The care of pilgrims is regarded as a religious duty." The pilgrims carry flags of different color but the black flag of mourning for Imam Hussein is by far the most common. They also decorate "permanent brick buildings and temporary tents which are used for praying, eating and sleeping along the three main routes leading to Kerbala." Along the roads to Karbala, many Mawakibs are devised with the aim of providing "accommodation, food and beverage and medical services", and practically anything else the pilgrims need for free. Seven thousand of such mawakeb were set up in city of Karbala in 2014. Besides Iraqi Mawakibs, which are unofficially organized, there are some Iranian ones which are less "specifically targeted" but pilgrims are from various regions.