Campbell, West, Dunn, many many others have done lifetimes worth of work on the subject.

Cleopatra's needle could be said to be like a stick to locate by.

The pyramids were 'self-locators' for sure.....as 'navel of the world'. It also functioned as initiation chambers, a magical display of how things connect by form, sound, substance, measurement, color, gas, light, etc etc etc. The measurements involved are also a type of schooling in Divine Geometry with the Golden Ratio and Fibonacci sequence, with the 'gods' taking their names from the gematric equivalent of the numbers that denote their 'position' or meaning within the pantheon.

Also could generate sounds or waves in the ELF variety.

The earliest sanscrit description of war has an army forced to its knees and losing their bowels due to a sound from the pyramids.

Now called The Brown Sound................for reasons.