Into the caves there are two different small shafts; there
are two medieval "butti".
At the time, each house had to have one of these shafts
in which to throw away bones and inorganic waste material
["buttare" = "to throw away"].
The "butti" have thus become reservoirs of history and what
is found provides invaluable information for historians
The first "butto" is a flask-shaped shaft while the second
one is with vertical walls; it was easier to dig, but more
dangerous. A series of small holes can be seen on the walls
of this shaft; these used to house small beams on which
the floor was reconstructed to avoid falling into the "butto".
The medieval pottery fragments [the kiln
] are found into shafts like these [see the
page of the kiln