ARCHAEOLOGICAL EXPLORATIONS IN AUGUSTA TRAIANA (Maria Kamisheva – maria_ivanowa@abv.bg) The explored area is situated in the northeastern part of Augusta Traiana. The inner fortification wall was explored at 17.60 m in length. It is oriented northwest – southeast. The wall is built of uneven stones bonded with mortar and is 1.63 m in width. Presumably, pilasters existed on two places from the inner side of the fortification wall. A banquette, 11 cm in width, was discovered at the outer side of the fortification wall. The second period of the construction of the fortification walls of Augusta Traiana dates to the second half of the 3rd – beginning of the 4th centuries AD.