One of the southern-most buildings in Agia Marina has some kind of error with the model or object definition. When looking around any corner of the building, objects are removed from the 3D scene before they have disappeared around the corner. The result is that you cannot see any objects unless you step further away from the corner.

Building shown by player location on attached map and the problem is illustrated by the attached screenshots. The distant men, rocks, bushes and signposts all disappear when close to the building corner. {F21729} {F21730} {F21731} {F21732} {F21733} {F21734}