This former Michigan Military base has a shape that makes you think of UFO's and secret airplane's. What was this base used for? 

Google Maps

Once you cross the Mackinac Bridge into the Upper Peninsula you are immediately surrounded by nature. Almost nothing but trees, sky and the open road. If you follow I-75 North to M-28 and then head West for about ten miles, You will pass through the small town of Raco, with a population so small that it isn't even listed.

Google Maps

 

A little further down the road is this airfield that you could drive right past if you didn't know where to look. from a satellite image you can see the triangle start to come into view.

Google Maps

Here you can see this strangely shaped Air Base that was know as the Raco Army Airfield. The base was built before World War II and has three 5,520' x 300' runways shaped like a triangle. The base was used as a stop for planes heading to Alaska or to defend the locks of Sault Ste. Marie with it's impressive arsenal. The base closed in 1972 and became a winter auto testing ground.

 

While researching this base, I found that BLDGBLOG had covered ih in 2010. you can see their story here.

Raco Army Airfield Today

And one more of people actually driving on an airstrip.

Have you ever seen any strange places like this in the Upper Peninsula? Tell us about it in the comments.