It was a hot, sunny day in the middle of July. The noontime air was warm and steamy. I was tan and happy. My dad, my two sisters and I were driving through Acadia National Park on Mount Desert Island, in Maine. We stopped and parked at the foot of a mountain. The infamous Bubble Rock rested at its peak. While reading the posted sign we learned how Bubble Rock was formed by glaciers. This rock hung over the edge of the steep mountain. Although the rock was quite stable, it looked like it would snap off at any moment. I looked up and re ....