Unnamed

A military structure located near the town of Trebinje, Bosnia and Herzegovina, in the region of historical Herzegovina. The provided web search results offer general historical context for Bosnia and Herzegovina, covering periods from Roman occupation through Ottoman rule and into the modern era, but contain no specific information regarding a bunker or military installation at the given coordinates (42.7851827, 18.1600103). The site's existence, purpose, and historical period cannot be confirmed from the available data.