Jerry and Ashley are trying to find out if it is possible to see the lowest point in the USA from the highest point in the USA. It turns out that the highest point in the The United States, the peak of Mount Whitney, is only 85 miles from the lowest area, a a large flat stretch of land in Death Valley called Badwater Basin. Jerry thinks that the curvature of the earth will block the view of Badwater Basin from the peak of Mount Whitney. Ashley doesn't think that this is an issue and that they can neglect the curvature of the earth in their investigation. As it turns out, it is not possible to see Badwater Basin from Mt. Whitney because the Panamint Range blocks the view. But what if there were no obstacles in the way? More precisely: Standing on top of Mt. Whitney is it possible to see a point on the surface of the earth 85 miles away, or would the the curvature of the earth prevents this?