Т-34 on Socotra
In the 1980s USSR was actively supporting South Yemen’s communism movement. As a heritage of that time one can see Soviet tanks T-34 embedded in various parts of the island.
The tanks have rusted, their tracks have fallen to pieces but their ends are securely covered. So, in case of any attack on the island it is quite possible to fire a shot aimed strictly at the sea. One can hardly ever expect the tank turrets to move.