| *Site of a large building with columns stuck
in the ground* |
 This is the remains of a building with columns
stuck in holes, which were dug in the ground.
The holes for the columns measure about two
meters in both diameter and depth, and all
the holes were at intervals of about 4.2
meters. The columns made of chestnut tress
with about one meter in diameter remained
in the holes. Because of abundant groundwater
and the charred surfaces and bottoms of the
wooden columns, the columns remained without
being decayed. The remains indicate that
there was a rectangular building with raised
floors and six columns. |
| *Child's grave (buried earthen pot)* |
 The corpses of children were put in earthen
pots with round holes, or chipped mouths
or bottoms, and buried near their residences.
To date, about 880 pots were surveyed. There
were many unearthed earthen pots where one
or two round stones the size of a clenched
fist were found and they are thought to be
related to the custom of burials. |
| *Valley (with a layer of peaty soil)* |
 This valley was used as a dumping ground.
Because the ground was moist
and shut out
air, relics such as wooden products,
which
are usually decayed without any
trace, lacquerware,
animal bones, fish bones, fish
scales, plants'
seeds, nuts and the eggs of parasitic
worms,
in addition to earthenware and
stone implements
remained in good condition.
In addition, a road of about 2 meters in
width and about 60 meters in length was built
from the center of the valley toward a river
in the north. Along the road, there are places
where rows of piles were set up for earth
retaining, or earthenware was stuck for the
prevention of collapse. |
| *Northern mound* |
 Wastes generated from daily life such as
surplus soil, which was left after building
pit dwellings or digging big holes in the
ground for columns, removed earth, ashes,
burned soil, earthenware and stone implements
were dumped. After repetitious dumping, wastes
were piled up higher than the surrounding
terrain, leaving a mound.
Visitors can take a look at a site that is
completely covered by broken earthenware. |
| *Adults' graves* |
 Adults were buried in holes, which were dug
in the ground in the shape of an ellipse
or an oval. Adults' graves are lined up in
two rows in the north and the south facing
each other across the road in the eastern
part of a valley. About 220 graves were surveyed.
There were some instances where jade pendants
were unearthed. |
| *Remains of a building with columns stuck
in the ground* |
 This is the remains of a building with columns,
which were set up in holes dug in the ground.
The building was restored and is thought
to be a warehouse with raised floors. |
| *Remains of a large pit dwelling* |
 The remains of more than ten large pit dwellings
with a length of 10 meters or more were surveyed.
The largest restored pit dwelling measures
32 meters in length.
The remains of the large pit dwelling in
the photo dates back to the end of the early
Jomon period (about 5,000 years ago). The
dwelling is 15 meters in length and 10 meters
wide. There is a furnace in almost the center
and the six columns support the roof. There
are several opinions that the dwelling was
used as an assembly hall, a common workshop
or a common dwelling in wintertime. |
| *Remains of a pit dwelling* |
 In the Jomon period, the ground was dug in
order to build the floors of dwellings. There
is a furnace in the center. To date, about
700 dwellings were surveyed.
The shapes of dug floors and the structures
of houses vary from time to time. In particular,
furnaces vary from those with dug and dented
holes in the ground to those covered with
broken earthen pieces and those enclosed
by stone. |
| *Southern mound* |
 Like the northern mound, wastes generated
from daily life were dumped and piled up
into a mound for about 1,000 years. Because
sediment is piled up horizontally, the ground
seemed to be leveled. Earthen figures and
jade balls were unearthed from the mound
in addition to a large amount of earthenware
and stone implements. Misbaked earthenware
was also dumped. |