Cluster of thick-walled defensive fortifications and ancillary structures positioned on the coast. The site (MAHS-IDN-ACH-ABS-MRY-S-001) consists of four main well-built rectangular structures. Two of the walled fortifications are intact and in good condition (restored by BPCB), while the other two are ruined foundations. There are a number of supporting features built within or in close proximity to the main defensive fortification, such as wells. Some of the features are surrounded by standing water and a canal.

(MAHS-IDN-ACH-ABS-MRY-S-001-F-0002) This feature features two thick parallel walls that make up the exterior sites of a large square stone enclosure which is known from historic sources to have been a fortification. The construction consists of mid to large stones mortared together. The enclosure has one formal opening in the northern wall. The perimeter of the outside wall is approximately 280 meters in total length and the interior is about 5,000 square meters. The feature contains a number of smaller features that have been documented individually by the MAHS. The feature is well-built and has been restored as a heritage site.