An aerial shot reveals the construction methods and beehive nature of the Ġgantija Temple Complex. An outer wall surrounds the two temples, their inner walls define their individual, D-shaped lobes or apses, and the space in between the inner and outer walls is filled with rock rubble and dirt. This method of locking the inner and outer walls together with infill strengthens the structure and allows it to be freestanding without the use of mortar. Aerial photo by Joe P. Borg, Heritage Books, Heritage Malta