They erected the Kamaka Fortress that existed from the 5th century BC to the 1st century BC , when the Romans built up their own fortified settlement over its ruins .
Its inhabitants were from the tribe of Krobizi .
inhabitants erected the Kamaka Fortress that existed from the 5th century BC to the 1st century BC , when the Romans built up their own fortified settlement over its ruins .
Its inhabitants were from the tribe of Krobizi .