The area roughly between the two main circular roads around the city (Ring Road and Sittin) is extremely active, with a high population density and very busy souks. These areas are crossed by major commercial thoroughfares such as al-Zubayri and Abd al-Mughni Street, and are extensively served by public transport. Particularly significant districts in this area include al-Hasabah in the north, Shumayla in the south, and Hayil in the west. Al-Hasabah was formerly a separate village as described by medieval writers al-Hamdani and al-Razi, but by the 1980s it had become a suburb of Sanaa.