Caesar then set out in the direction of Gergovia, which Vercingetorix was probably able to guess easily once he had remarked his direction. The heights of Gergovia stand twelve hundred feet above the plain that they overlook. It is a plateau that is a mile and a half long by a third of a mile wide. It was an advantageous place to hold, as there was only one way in, and a small body of troops could hold the entrance to the place.