Built of brick and stone , the mosque proper forms a rectangle having outside dimensions of from north to south and from east to west . All the four walls are veneered externally and to some extent also internally with granite stone blocks . These stones have disappeared from the southern side of the west wall because of conservation works after the destruction by the earthquake of 1897 . The four exterior angles of the building are strengthened with polygonal towers , of which nine facets are visible . The cornices are curvilinear and have stone gutters to drain off the rain water from the roof . There are five arched doorways in the eastern facade and three each on the north and south walls . Corresponding to the five archways in the east wall there are five semi-circular '' mihrabs '' inside the west wall . The stones of most of these miharbs have disappeared
earthquake of 1897
1897 Assam earthquake
Choto Sona Mosque