What Is It?
Natural
Igneous Rock
Composed of rock called phonolite porphyry
Volcanic rock/ erosion process took place over millions of years.
Once was a volcano
Volcano destroyed by earthquake
Remaining volcano covered by rock over the years.
Natural
Igneous Rock
Composed of rock called phonolite porphyry
Volcanic rock/ erosion process took place over millions of years.
Once was a volcano
Volcano destroyed by earthquake
Remaining volcano covered by rock over the years.