Panola Mountain Nature Somethingorother. Right near Lithonia there are a few state parks in which there are huge, dome-shaped granite formations. All the plants and trees live in eroded depressions in the surface. I saw a park sign that showed how these mountainous rocks were once giant magma bubbles under the surface. Wouldn't it be a drag if a terrorist figured out a way to conceal a multi-million metric ton magma bubble in a suitcase? I hope the terrorists don't figure out a way to use this granite against us.