The city was surrounded by fortified earthen ramparts and dry moats. Large ramparts and moats were built around the city. The Sigiriya rock fortress is surrounded by an extensive network of ramparts and moats. The fortress once consisted of long ramparts and four major towers. It had earthen ramparts and a timber palisade. The medieval cobblestone was uncovered, so as the old ramparts and gates. They are heavily fortified with dry-stone or wooden ramparts. There are remains of -high ramparts and -thick outer walls. The cashel was surrounded by three concentric ramparts. Medieval constructions include temples, ramparts, etc. The second proposal was for 6 sets of bombproof casemates set into the ramparts. From the 1890s road widening meant some parts of the ramparts and gates were demolished. Remnants of the long castrum with thick ramparts are still visible today. Other explanations have been suggested for the terraces, including the construction of defensive ramparts. The hill also features two circular ramparts.