Oh I hope he's not hungry. We aren't even big enough to be an appetizer.... the statue represents a sauropod, a type of massive, long-necked, plant-eating dinosaur that lived during the Jurassic Period. Whew, it only likes plants.

Volcanic Foundations: The lower canyon is dominated by rhyolite, formed from explosive volcanic eruptions related to the Yellowstone hotspot about 8 to 10 million years ago.
Basalt Flows: Capping the rhyolite are younger, darker layers of basalt from local shield volcanoes.
Canyon Formation: The canyon was carved by high-volume flows, including the massive Bonneville Flood approximately 14,500 years ago, which deepened the canyon.