An interior view depicts four individuals walking through a roughly hewn, artificially lit tunnel in Petrovac na Moru, Montenegro

An interior view depicts four individuals walking through a roughly hewn, artificially lit tunnel in Petrovac na Moru, Montenegro. The tunnel, characterized by irregular, reddish-brown rock walls and ceiling, is illuminated by bare incandescent bulbs mounted at intervals, casting localized light and deep shadows. The ground surface is a smooth, light brown path. In the distance, the tunnel opens into a brighter, possibly constructed section with lighter-colored walls, indicating a continued passage or exit. The subjects are observed from behind, moving away from the camera. From left to right: one individual wears a dark jacket with a prominent tan upper section; next, an individual in a dark coat and light trousers carries a light-colored object in their right hand; a third individual, smaller in stature, wears a dark hooded jacket and carries a light-colored container in their left hand; the fourth individual, on the far right, wears a dark jacket. All individuals are engaged in forward locomotion through the subterranean passage.