Why is the tallest hill of a roller coaster always tallest?

This is incorrect, while the tallest hill on a roller coaster may often be the most notable, it is not always the tallest. On many coasters, the track may reach its peak at a point that is not the highest or most visible hill. This can be due to the design and layout of the ride, and does not necessarily affect the overall experience or thrill factor of the coaster.