This
was on the banks of the lake. Inside, poisonous fumes exhaled from ground level
to a height of 30 centimetres. A popular experiment during the period of the
“Grand Tour” consisted in introducing a dog into the cave, which after only
a few moments fell into a fainting fit due to breathing the poisonous air, this
resulted lethal if the poor beast wasn’t immediately pulled out into the open
air.
Dog’s
Cave- F.A. Letizia- XV111 century