Niz kamnitih gomil na severnem kraškem robu je C. Marchesetti v začetku 20. stoletja razložil kot bronastodobne grobne gomile. S. Gabrovec jih je vključil v kaštelirsko kulturo srednje bronaste dobe ...in jih primerjal s podobnimi is- trskimi grobnimi gomilami.
Zaščitna izkopavanja gomile na Ostrem vrhu so l. 1992 razkrila ovalno zgradbo premera 11 m, grajeno v suhozidni tehniki. Obodni zid je bil širok med 1,5 in 2,5 m, v višino pa je bil ohranjen do 1,9 m. V zidu so se ohranile zunanje in notranje niše za nosilne lesene tramove, kar kaže na leseno nadgradnjo kamnite zgradbe, verjetno stolpa. Jama za nosilni tram v osrednjem delu stolpa dokazuje, da je bil tudi nadstrešen. Niz radiokarbonskih datacij kaže na mlajšehalštatsko starost izgradnje in uporabe stolpa.
Verjetno je bila vzdolž severnega kraškega roba zgrajena vrsta stolpov, ki so bili skupaj z nizom manjših, močno utrjenih gradišč namenjeni nadzoru dostopa in obrambi ozemlja centralnih gradišč kraške kulturne skupine med 6. in 4. st. pr. n. št.
The monograph presents the results of two-year excavations (1982 and 1983) on the late-antique fortified hilltop settlement Korinjski hrib above Veliki Korini in Suha Krajina, where the remains of ...five defence towers and an early Christian church were explored. The settlement was initially recognized as a military post and as such represented an exception in the Eastern Alpine area. Such a definition raised some doubts and dilemmas. These dilemmas are presented - in addition to geographical outline and research history - in the Introduction.The following set presents - in text and with abundant graphic material – field reports of excavations of towers, the church, and a small cemetery.All groups of finds (non-pottery, pottery and coins) and anthropological and archaeological studies are also presented.An extensive chapter is devoted to the interpretation of architectural remains (towers, church, the fort as a whole).The conclusion also discusses the prehistoric settlement, and the results of structural survey of the ruins of church of St George just below the fort.
Na Gradu so imeli okupatorji tudi težko artilerijo, s katero so streljali čez mesto na partizane, zlasti v smeri proti Molniku, Mokrcu in Krimu, po potrebi pa bi streljali tudi na sámo mesto.