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Plan showing the garden and quadriporticus
The Quadriporticus and Garden
Several areas were excavated around the large quadriporticus
(fig. 1: 23,54,55 [high resolution
(196k); low resolution (96k)]).
The remains of the quadriporticus visible today are built in
opus reticulatum, but our wall census has ascertained
that these are almost entirely modern restorations. In the southern
parts of the east and west corridors and the entire length of
the southern corridor the walls are preserved only at the foundations,
sealed by a restoration cap. The excavations in the western corridor
(23a,b) brought to light the first phase of building in
this area: an older stone structure over which the western back
wall of the quadriporticus was built. The earlier structure was
carefully constructed in opus incertum; in one spot (23a)
some red painted plaster is preserved. Even if its function is
unknown, this wall in opus incertum gives clear evidence
of a phase preceding the construction of the quadriporticus--a
phase not attested before our excavations. The wall was used
as the foundation for this part of the quadriporticus in the
second building phase, during which the floor level was
significantly raised. Also datable to the second phase is the
drain exposed at the foot of the northwest staircase leading
from the corridor to the residence and rising higher than the
floor of phase one (23a). The raising of the surface level in
this part of the villa is encountered elsewhere on the site at
the same period. Giving an absolute chronology to this phase
is difficult in view of the scarce ceramic finds and the presence
of some residual material.
The investigation conducted in the eastern corridor excluded
a phase analogous to the first phase in the western corridor.
The eastern part, which drifts slightly to the southwest in orientation,
presents a series of interpretative problems partially connected
to various restorations in the twentieth century and complicated
by the presence here and there of intrusive constructions. These
include a brick structure (55b) inserted into the corridor on
axis with the great pool (25) in the middle of the garden. This
structure can be identified as either a fountain or a theatral
screen. The latter is perhaps more likely since no evidence of
a water supply or of a drain was found. In either case, its structural
function was to retain the steep hillside to the east. The same
is likely true of the other structures inserted into the eastern
corridor (55a, etc.). Dating of this phase to a precise period
is not possible given the total lack of stratigraphy. Based on
the similar construction technique found here and, e.g., in the
apsidal basin (37) we propose a date somewhere in the period
75/125 A.D.

Area 54 on the south side of the quadriporticus was excavated
in order to verify the hypothesis of various scholars that the
main entrance to the villa was to be found here. The investigations
led to the identification of the foundation of the wall, to which
were bonded buttresses similar to those present on the exterior
wall of the western corridor, except that they are set closer
together (see illustration above). In fact the buttresses are
so close together (1.20 meters apart) that it is difficult to
imagine a monumental entrance here. On the other hand, we cannot
exclude the possibility that there was an opening for at least
a secondary doorway giving access from the garden and quadriporticus
to the adjacent land to the south.

The vast area surounded by the quadriporticus was the object
of various interventions from 1997-1999 that were mainly intended
to verify traces of the garden, which we assumed filled much
of the space within the limits of the quadriporticus. We also
were interested in determining the chronological relationship
of the piscina in the middle of this area to the rest
of the villa. Excavations and borings established various phases
for the garden. Special attention was paid to area 24 at the
foot of the central staircase (13) leading from the garden to
the residence. Here Kathryn Gleason and her team from Cornell
University dug a trial trench to see if remains of the garden
could be found. In area 24, two levels of planting were found.
The earliest can be dated by pottery finds to the last half of
the first century B.C. A new and more complex organization of
the green area was detectable in the late first century A.D.
Among the various finds useful for reconstructing the design
of the garden, the most important was the discovery of a flowerpot
still in situ. It dates to the Flavian period (see illustration
above). Two other containers for plant materials were found on
a line oriented north-south and located at the foot of the central
staircase leading from the residence to the garden. It is known
that the Romans often planted flowers and other plants in such
containers, aligning them at regular intervals on a grid system
in order to create ornamental areas along pathways and canals
in their gardens.
In contrast to the garden, the piscina yielded only very little
material useful for dating. This structure, built in opus
signinum, had both a decorative function in the middle of
the garden and also served as an open-air cistern for storing
water. It may also have been used for fish cultivation. In the
late phase of the villa, when the site was no longer inhabited,
the piscina was stripped of its decorataive elements (which might
have included statues and marble revetment) and used as a waste
dump, as is attested by the many fragments of marble and building
material constituting its fill.
Plan showing the residence
The Residence
One of the main objectives of the project was to identify
the complete extent of the complex. Various considerations led
us to doubt the validity of the plan of Pasqui's excavations
published in 1926 by Lugli and frequently reproduced thereafter.
Particularly suspicious was the north wall that seemingly closed
off the residence. Our wall census showed that the wall was largely
a modern invention; our archival research brought to light documents
confirming this observation; and our soundings in 1999 proved
that three of the walls did in fact continue running northwards
(cf. the soundings beyond areas 8,17, and 26 on the plan above).
It is not possible on the basis of our current knowledge to hazard
a guess as to the date or function of these walls, but their
discovery clearly necessitates a rethinking of the plan and design
of the villa.

A drawing found in the archives, which dates from ca. 1912
(see illustration above), occasioned a small excavation inside
the residence in 2001. At the beginning of the project, we had
decided not to dig in the residence because we knew that it had
been thoroughly excavated by Pasqui from 1911 to 1914 and so
we did not expect to find any undisturbed ancient stratigraphy
here. But the document we found surprised us: it showed structures
below the surface of the atrium (room 12) that were hitherto
unmentioned in the scholarly literature (cf. the upper left-hand
part of the drawing for the these structures).

While we knew that Pasqui had destroyed ancient stratigraphy
and had heavily restored the site--in some cases, as we have
just seen, even inventing new walls--we did not know that he
had reburied some of the authentic ancient features he did find.
But a glance at the atrium as it appeared in 2001 before our
excavation (see illustration above; and note that the photograph
and drawing have the same orientation and viewpoint) will confirm
that the features in the 1912 drawing were no longer visible
on the surface. So we were naturally curious to know whether
they could still be found, if the area was excavated. And, even
more importantly, we wished to know if the purpose and date of
the structures could still be determined, despite Pasqui's destructive
methods of digging.

As the above photograph shows, the excavation of July 2001
confirmed that the features drawn in 1912 still exist and predate
the walls visible on the surface today. In particular, the square
structure in the top corner of the drawing turned out to be part
of a water basin. It was presumably rectangular in shape, but
this could not be confirmed since, for a variety of reasons,
it was not possible to trace its walls beyond room 12. Other
structures were also found whose existence had never been suspected.
The basin is interesting for several reasons. Although no dating
materials were found in association with it, we can put it securely
into a relative chronology that is earlier than the building
phase visible on the surface today and that probably corresponds
to the first garden layer and the atrium phase of the imperial
bath complex. This adds weight to our redating of the remains
currently visible in the residence, on other grounds, to the
period 75/125 A.D.--a significant change in our understanding
of the complex, since Pasqui and all later scholars have considered
the residence to be Augustan in date. Moreover, the function
of the basin may have been to ornament the garden in the first
(late-Republican) phase; alternatively, it may have had a more
practical use. In the latter case, it would be our first evidence
of the long-sought pars rustica (i.e., working farm area)
of the villa. At the moment, opinion is divided about how to
interpret the function of this water feature.
Be that as it may, the excavation of 2001 was also important
because it confirmed the reliability of the 1912 drawing and
also the fact that Pasqui had not destroyed the features he reburied.
Since the 1912 document was found in a cache of several such
drawings, some of which show other features no longer visible
in the residence, this is an encouragement to future excavators
to undertake other interventions in the residence.
Conclusion
The Horace's Villa Project began in 1997 with the notion that
after two major excavations earlier in the twentieth century,
all that was left to do on the site was to fill in some gaps
in our knowledge and to clarify some remaining questions about
details of the design and phasing of the villa. As the project
developed, it became clear that our mission had shifted significantly,
as evidence kept coming to light all around the site that the
earlier excavators had misdated many features to the Augustan
age--doubtless in an attempt to make Horatian ownership more
likely. Finding structures in opus reticulatum, they leapt
to the conclusion that these were datable to the late first century
B.C. and stopped digging before reaching virgin soil. Application
of the technique of stratigraphic excavation and reconsideration
of the material found by our predecessors (especially the mosaics
and the fresco fragments) suggested that what the earlier excavators
considered Augustan should really be assigned to the period 75/125
A.D., and study of the lead waterpipe inscriptions even suggested
one owner who nicely fits into this period--Publius Hostilius
Firminus. Meanwhile, the case for Horatian ownership at an earlier
phase was, if anything, strengthened, since we also brought to
light some hitherto unknown features all around the site that
did date to the first century B.C. Hence, much to our surprise
(not to say consternation!) what began as a small project to
put the final touches onto the large canvas painted by our predecessors
turned out to be a feasibility study for a whole new major study
of the site.
Taken as a whole, our new finds--important as they are--are
only a drop in the proverbial bucket. Limitations of time and
money (for which we had only ourselves to blame, given our intial
limited understanding of our mission, which determined our budget)
made it impossible to do more than undertake some test excavations
and soundings. If these bore fruit (and they did), then they
constitute no more than a strong incentive to return to the site
in the future with much more time, manpower, and funding in order
to explore the 90-95% of the site where we estimate that no one
has yet dug down to virgin soil. This includes the garden, where
Prof. Gleason's painstaking work in one small area has proven
that data survives on two levels that could permit a full reconstruction
of the design of the quadriporticus park. But it also encompasses
the baths and residence, where we have shown that late-Republican
structures still are to be found beneath the imperial walls.
These three areas would require substantial financial support
since the garden is large (ca. 40 meters x 80 meters, with an
average overburden of 1.5 to 2.0 meters); and in the residence
and baths excavation would often mean cutting through substantial
imperial remains, which would in itself be expensive and would
also necessitate a large investment in conservation.

That someone will someday undertake this major new effort
is inevitable, given the importance of the site and the fact
that what makes it important--the villa as Horace knew it--is
just starting to emerge from the soil. Whether that day will
be in the immediate or distant future, only time will tell.
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