God destroyed them not an Indian throwing a spear. Did you see a spear? No you didn't but watch the flood light grow in intensity before the stones were destroyed and yet the Light did not shatter but the multi-ton stones did.
God destroyed a wicked generation by a "Flood" and used "Noah" and an "Ark" to save the next generation.
God destroyed the Guidestones through a "Flood" light by an "Arc" of Energy that annihilated the Guidestones, which had the "Noahide" laws on it as their final apocalyptic warning.