Lava eruptions later created a central platform, Wizard Island, Merriam Cone, and other, smaller volcanic features, including a rhyodacite dome that was eventually created atop the central platform. Sediments and landslide debris also covered the caldera floor.
Lava eruptions later created a central platform Wizard Island Merriam Cone and other smaller volcanic features including a rhyodacite dome that was eventually created atop the central platform Sediments and landslide debris also covered the caldera floor