Today when you wish to get from one place to another you have a number of street signs that will help you get where you want to. You can also log in to a GPS and make sense of which path you need to cut through all these street signs to take you to your intended destination without once placing a foot astray.

Did you ever wonder how difficult navigation would have been in the ages before man put satellites into the sky? When the only way to navigate was to know your stars and plot a course on the ground based on the picture seen in these celestial formations? Imagine having to find your way under such conditions.

Tough, isn’t it! Well now imagine trying to fly through the skies under such conditions where you have no instruments to guide you. The US Department of commerce began establishing airways for trade in the mid 1920s. The old World War I planes were flown over huge landscapes with very rudimentary instruments. Imagine a science project where you have to navigate like that!

In order to aid their pilots the they put up big concrete arrows on the ground pointing in the direction that the pilot should be moving to reach the next town and airfield. Some of these ancient flying path finders can still be seen along the old air routes, befuddling their use to people unaware of the past.