Italian officials hope the piece will lead them to what may have been a palace owned by Caligula on volcanic Lake
Nemi, reports the Telegraph.
The footprints were preserved as trace fossils in volcanic Xalnene ash along what was the shoreline of an ancient volcanic lake
The trails became submerged when the water levels rose and the footprints were preserved until quarry workers excavated the lake sediment to use the ash, which is now as hard as concrete, as a building material.
A volcanic lake
in Cameroon provided a natural illustration of this scenario in 1986, when a bubble of carbon dioxide escaped from the water and killed 1,700 people.
The footprints were preserved as trace fossils in volcanic ash along what was the shoreline of an ancient volcanic lake
Workers have dug a canal to within 17 feet of a rapidly rising volcanic lake
that threatens to collapse Pinatubo's crater and flood villages.
go whale watching, above, or enjoy lush countryside and volcanic lakes
across the nine gorgeous islands
We see this in some volcanic lakes
in East African today," the BBC quoted Dr Walter Joyce of the University of Tubingen, as saying.
On top of that it harbors amazing natural beauty, including mountains, plains, valleys, deserts, rivers, volcanic lakes
and abundant wildlife.
it) set in beautiful old buildings within natural scenery composed of centuries-old verdant trees and the bliss of the two volcanic lakes
of Albano and Nemi.
2] are gradually released from volcanic lakes
when seasonal changes cause cold and warm layers of water to mix.
, dramatic coastal scenery, geysers and the clear seas of the Atlantic Ocean.
On their five-day trip, beginning on July 6, they will face volcanic lakes
, snowfields and steaming vents.