Father Frane Bulić, who discovered the remains of the church and a water tank, was doing a research of the archaeological remains in Klapavice already in the early 20th century. Due to one of the inscriptions found, he assumed that the early Christian church developed on an earlier shrine of a local (Illyrian) god Silvanus and his companions, nymphs. New research conducted in 2005/2006 revealed the existence of two churches, a water tank and residential and commercial premises (a monastery), tombs and a baptistery. At that time, piscinae or pools for baptism, were somewhat larger since the baptism was performed by immersion (lat. - per immersionem) of a person, usually just before the Easter. In these early centuries of Christianity, the ceremony was performed exclusively by the bishop.
The complex was built during the 5th century and is located a few hundred meters north of the Roman road. Along the same road, now partly cleaned thanks to the Split-Dalmatia County Tourist Board, there was a small settlement above which, on the site of prehistoric ruins on the hill Šutanj, a Late Antiquity fort was built. During the mentioned research, in narthex (lobby) of the church a hoard of gold and silver coins of Ostrogothic rulers was found, which were hidden there around year 535/536, in the middle of the war between Ostrogoths and Byzantium. It was then when the complex was damaged, and someone hid the money in the narthex of the church and never returned to take it back. Later, more precisely in the 9th and 10th century and again in the 15th and 16th century, a small graveyard was created on these ruins.
Klapavice site is often found on the late medieval and early modern period maps, as next to it the main caravan route to the interior passed. Somewhere in the vicinity of this site, in January 1508, Prince Žarko Dražojević from Poljice was killed in an ambush while he was carrying aid to Sinj and his fort Nutjak on Cetina for the fight against the Turks.