In 2154, when StarfleetCommandersTucker and T'Pol went on a sight-seeing expedition to Vulcan, one of the many sites they visited was the Vulcan Fire Plains. They stood on a cliff overlooking the vista as T'Pol informed Tucker, who was besotted with her, that she was due to marryKoss. (ENT: "Home", "Affliction")
In the script of "Home", the Fire Plains are described thus; "A vast, boiling field of lava stretches for kilometers in the distance. Enormous rock statues stand on a cliff overlooking the fire plains... they’re carved in the image of ancient Vulcan warriors. The statues loom over the scene with power and majesty."