Most of them headed towards two regions: the mountainous border spce of Myawaddy-Mae Sot and, further to the south, the Bangkok area, especially the zone of Mahachai-Samut Prakan. Two other zones are known to have an important concentration of Burmese migrant workers: in the north, the border space of Tachilek-Mae Sai and,to the south,the area of Kawthaung-Ranong.