In 1961, my Dad was assigned to the Intelligence School at Fort Holabird. The jeep testing hill was popular with us Army Brats. I was 14 at the time. In the winter, our Flexible Flyer sleds reached warp speed on the steepest track pictured below. We built a hump of snow at the bottom. You could catch air coming off it and my groin still hurts every time I think of it.
Toward the left side of the photograph there is a wide concrete gutter that we used in the summer. It was so steep you could ride a folded flat cardboard box down it until the cardboard wore thin and your butt began to get warm. I wore off the outside edges of my shoes using them for brakes on the concrete.
From time to time MPs would come along in a jeep and order us off the hill. They never drove up or down the hill. It is much steeper than the photograph appears, or perhaps it grew steeper in my memory.
Here is a photo from 1940 Life Magazine. The camera is tilted so I'm not sure if it is the steepest of the three ramps or not. Notice there are no trees on the hill in this picture. By 1961, saplings and brush were coming up. In the picture above they are grown trees.
So you see kind reader, at a tender age I was imbued with the history, military heritage and romance of the jeep. It only took me 53 years before I finally acted on it.