Signal Mountain rises almost 1,000 feet above the valley making it the highest point visitors can drive to in the park. On a clear day you may see several mountain ranges: Teton, Gros Ventre, Absaroka and Yellowstone Plateau. The valley floor records the passage of Pleistocene Ice Age glaciers that scoured the valley and carved lakes. The dimples in the landscape below you are potholes also known as kettles. These formed when ice broke free from retreating glaciers and was buried in sediment. The ice later melted and formed a depression. Enjoy the view but also appreciate the geologic forces that shaped this landscape.