Seemingly impossible to construct and transport – Ancient megaliths remain the subject of awe and speculation to modern society. Has ancient knowledge been hidden or lost over time?

Compasses are instruments for finding the direction. They point to the north and accordingly the rest of the points of direction can be discerned. Compasses are used for navigational purposes in ships and planes. They are also used on the land during hiking and for general orientation. For this there are small portable compasses available.