All platforms (ahu) on Easter Island are located along the coast and all statues (moai) are facing inland. There are only a few exceptions; one of them is Ahu Akivi. Originally erected in the 15th century, during the so called "golden age" of the Moai Culture this ahu is considered one of their finest works. The seven moai looking at the sea, face the rising sun of the equinoxes. This suggests an astrological importance of this site. The other theory describes seven staues as the original seven navigators, first to reach this island.