A kiln built into the hillside
The climbing kiln at Nagatani-en runs for 34 meters up a slope in Marubashira, a village of potters in Iga City, Mie Prefecture. The ground rises 9.6 meters from bottom to top, and the firing chambers follow that incline in a single straight line. At the lower, northern end sits the main stoke-hole, where the first fire was lit; heat and flame then drew upward through each chamber in turn. A stone retaining wall supports the structure where the hillside falls away.
The kiln dates to the closing decades of the Edo period, roughly the years around 1830 to 1868. That places its construction close to the opening of the Nagatani-en works in 1832, the year the family began firing the coarse, fire-resistant clay of Iga into cookware and everyday vessels. The kiln sits just southeast of the Taisho-kan, the former office building that anchors the older part of the grounds.
Why it was registered
Nagatani-en's climbing kiln was entered on the national register of Tangible Cultural Properties in October 2011, under the criterion for structures that contribute to the historic character of the landscape. A multi-chamber climbing kiln of this length, still standing and legible as a working object, is uncommon. The workshop kept firing it until the 1970s, so its retirement is recent enough that the memory of it in use has not faded.
There is a small discrepancy worth knowing. The national record describes fifteen firing chambers set in a straight line. Local signage and the workshop's own materials refer to the structure as the sixteen-chamber kiln, and that name is widely used in guides to the area. Both figures point to the same object; the register's count is the official one.
What to look for
Seen from below, the chambers step up the hillside one after another, and the effect is closer to a length of rampart than to a single oven. The stonework at the base, the low arched openings, and the soot-darkened clay reward a slow walk along the slope. Because the kiln is part of the main-store and strolling area rather than a fenced-off monument, you can approach it on foot and read its construction at close range.
The fire-resistance that made this kiln useful comes from the local clay itself. Iga sits on the old Biwa lakebed, and the clay dug from that layer is full of the burned-out traces of ancient plant and animal matter, which leaves the fired body porous. That property is the reason donabe, the clay pots Nagatani-en is known for, can take direct flame without cracking.
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Q&A
- Can visitors see the climbing kiln?
- Yes. The kiln stands within the main-store and strolling area of the Iga honten, which is open to visitors, so you can walk up to it on foot.
- Is the kiln still fired today?
- No. It was used for firing until around the 1970s and is now preserved as a registered cultural property rather than kept in operation.
- How many chambers does it have?
- The national register records fifteen firing chambers in a straight line. It is popularly called the sixteen-chamber kiln in local guides, so you may see either figure.
- Why is Iga clay suited to kilns and cookware?
- The clay comes from the old Biwa lakebed and fires to a porous body, which resists heat well. This is why Iga donabe can be set over an open flame.
- When did the Nagatani-en works open?
- In 1832, in the late Edo period. The kiln was built in the same era, in the years leading up to 1868.
Basic Information
| Name | Nagatani-en Climbing Kiln (Nagatani-en Noborigama) |
|---|---|
| Location | 569 Aza-Hase, Marubashira, Iga City, Mie Prefecture |
| Category | Registered Tangible Cultural Property (structure / industrial, secondary) |
| Registered | 28 October 2011 (register no. 24-0119) |
| Count | 1 kiln |
| Period | Late Edo period (circa 1830-1868) |
| Structure | Multi-chamber climbing kiln, 34 m deep, 6.7 m wide, with stone retaining wall; register records 15 firing chambers |
| Access | Within the Iga honten strolling area, open to visitors |
References
- 国指定文化財等データベース — Cultural Heritage Online (Agency for Cultural Affairs)
- https://kunishitei.bunka.go.jp/heritage/detail/101/00009029
- 伊賀焼窯元 長谷園 公式サイト — 長谷園について
- https://igamono.co.jp/at-first/
- 観光三重 — 伊賀焼窯元 長谷園
- https://www.kankomie.or.jp/spot/33
Last verified: 2026.07.11