Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
List of Historic Sites of Japan (Iwate)
Table title:
National Historic Sites
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Site </th><th colspan=1 rowspan=1 > Municipality </th><th colspan=1 rowspan=1 > Comments </th><th colspan=1 rowspan=1 > Image </th><th colspan=1 rowspan=1 > Coordinates </th><th colspan=1 rowspan=1 > Type </th><th colspan=1 rowspan=1 > Ref. </th></tr>
<tr> <td colspan=1 rowspan=1 > *Chūson-ji Precinct 中尊寺境内 Chūsonji keidai </td><td colspan=1 rowspan=1 > Hiraizumi </td><td colspan=1 rowspan=1 > part of the UNESCO World Heritage Site Hiraizumi – Temples, Gardens and Archaeological Sites Representing the Buddhist Pure Land </td><td colspan=1 rowspan=1 > Chūsonji Precinct </td><td colspan=1 rowspan=1 > 39°00′07″N 141°06′00″E / 39.00186419°N 141.10007091°E </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > 165 </td></tr>
<tr> <td colspan=1 rowspan=1 > *Muryōkō-in Site 無量光院跡 Muryōkōin ato </td><td colspan=1 rowspan=1 > Hiraizumi </td><td colspan=1 rowspan=1 > part of the UNESCO World Heritage Site Hiraizumi – Temples, Gardens and Archaeological Sites Representing the Buddhist Pure Land </td><td colspan=1 rowspan=1 > Muryōkōin Site </td><td colspan=1 rowspan=1 > 38°59′35″N 141°06′57″E / 38.99293001°N 141.1158882°E </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > 117 </td></tr>
<tr> <td colspan=1 rowspan=1 > *Mōtsū-ji Precinct and associated Chinjusha 毛越寺境内 附 鎮守社跡 Mōtsūji keidai tsuketari chinjūsha ato </td><td colspan=1 rowspan=1 > Hiraizumi </td><td colspan=1 rowspan=1 > part of the UNESCO World Heritage Site Hiraizumi – Temples, Gardens and Archaeological Sites Representing the Buddhist Pure Land </td><td colspan=1 rowspan=1 > Mōtsūji Precinct </td><td colspan=1 rowspan=1 > 38°59′26″N 141°06′56″E / 38.99053116°N 141.11545706°E </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > 116 </td></tr>
<tr> <td colspan=1 rowspan=1 > Ayaorishinden Site 綾織新田遺跡 Ayaorishinden iseki </td><td colspan=1 rowspan=1 > Tōno </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°19′01″N 141°17′56″E / 39.31704513°N 141.29888505°E </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 3344 </td></tr>
<tr> <td colspan=1 rowspan=1 > Ōshū Kaidō 奥州街道 Ōshū Kaidō </td><td colspan=1 rowspan=1 > Ichinohe, Iwate </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 40°14′20″N 141°28′07″E / 40.2388038°N 141.46854328°E </td><td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > 00003655 </td></tr>
<tr> <td colspan=1 rowspan=1 > Shimofunato Shell Mound 下船渡貝塚 Shimofunato kaizuka </td><td colspan=1 rowspan=1 > Ōfunato </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°02′16″N 141°43′09″E / 39.03776484°N 141.7190317°E </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 129 </td></tr>
<tr> <td colspan=1 rowspan=1 > Tsunozuka Kofun 角塚古墳 Tsunozuka kofun </td><td colspan=1 rowspan=1 > Ōshū </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Tsunozuka Kofun </td><td colspan=1 rowspan=1 > 39°08′29″N 141°05′37″E / 39.14136172°N 141.09374587°E </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 168 </td></tr>
<tr> <td colspan=1 rowspan=1 > Kabayama Site 樺山遺跡 Kabayama iseki </td><td colspan=1 rowspan=1 > Kitakami </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°14′32″N 141°07′48″E / 39.24234144°N 141.12987147°E </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 163 </td></tr>
<tr> <td colspan=1 rowspan=1 > Hashino iron mining and smelting site 橋野高炉跡 Hashino kōro ato </td><td colspan=1 rowspan=1 > Kamaishi </td><td colspan=1 rowspan=1 > oldest Western-style blast furnace in Japan, built in 1858; influenced the development of the Yawata Steel Works and for this reason included within the submission for inscription on the UNESCO World Heritage List of The Modern Industrial Heritage Sites in Kyushu and Yamaguchi </td><td colspan=1 rowspan=1 > Hashino Blast Furnace Site </td><td colspan=1 rowspan=1 > 39°20′36″N 141°40′57″E / 39.34342274°N 141.6824396°E </td><td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > 157 </td></tr>
<tr> <td colspan=1 rowspan=1 > Kinkeizan 金鶏山 Kinkeizan </td><td colspan=1 rowspan=1 > Hiraizumi </td><td colspan=1 rowspan=1 > part of the UNESCO World Heritage Site Hiraizumi – Temples, Gardens and Archaeological Sites Representing the Buddhist Pure Land </td><td colspan=1 rowspan=1 > Kinkeizan </td><td colspan=1 rowspan=1 > 38°59′36″N 141°06′33″E / 38.99335037°N 141.10920153°E </td><td colspan=1 rowspan=1 > 2,3 </td><td colspan=1 rowspan=1 > 3428 </td></tr>
<tr> <td colspan=1 rowspan=1 > Kunohe Castle 九戸城跡 Kunohe-jō ato </td><td colspan=1 rowspan=1 > Ninohe </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Kunohe Castle Site </td><td colspan=1 rowspan=1 > 40°16′04″N 141°18′11″E / 40.26790019°N 141.30316196°E </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > 134 </td></tr>
<tr> <td colspan=1 rowspan=1 > Goshono Site 御所野遺跡 Goshono iseki </td><td colspan=1 rowspan=1 > Ichinohe </td><td colspan=1 rowspan=1 > submitted for inscription on the UNESCO World Heritage List as one of the Jōmon Archaeological Sites in Hokkaidō, Northern Tōhoku, and other regions </td><td colspan=1 rowspan=1 > Goshono Site </td><td colspan=1 rowspan=1 > 40°11′53″N 141°18′23″E / 40.19815136°N 141.30645834°E </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 169 </td></tr>
<tr> <td colspan=1 rowspan=1 > Ezuriko Kofun Cluster 江釣子古墳群 Ezuriko kofun-gun </td><td colspan=1 rowspan=1 > Kitakami </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°17′29″N 141°04′56″E / 39.29146211°N 141.08231253°E </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 166 </td></tr>
<tr> <td colspan=1 rowspan=1 > Former Residence of Takano Chōei 高野長英旧宅 Takano Chōei kyū-taku </td><td colspan=1 rowspan=1 > Ōshū </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°08′30″N 141°08′28″E / 39.14161321°N 141.14100696°E </td><td colspan=1 rowspan=1 > 8 </td><td colspan=1 rowspan=1 > 128 </td></tr>
<tr> <td colspan=1 rowspan=1 > Kunimisan Haiji Site 国見山廃寺跡 Kunimisan Haiji ato </td><td colspan=1 rowspan=1 > Kitakami </td><td colspan=1 rowspan=1 > Heian-period excavated artefacts </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°15′48″N 141°08′32″E / 39.263443°N 141.14212°E </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > 3398 </td></tr>
<tr> <td colspan=1 rowspan=1 > Honederamura Shōen Site 骨寺村荘園遺跡 Honederamura shōen iseki </td><td colspan=1 rowspan=1 > Ichinoseki </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 38°58′54″N 140°57′06″E / 38.9817021°N 140.95177743°E </td><td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > 3415 </td></tr>
<tr> <td colspan=1 rowspan=1 > Sakiyama Shell Mound 崎山貝塚 Sakiyama kaizuka </td><td colspan=1 rowspan=1 > Miyako </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°40′29″N 141°57′41″E / 39.67463142°N 141.96144694°E </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 170 </td></tr>
<tr> <td colspan=1 rowspan=1 > Shiwa Castle Site 志波城跡 Shiwa-jō ato </td><td colspan=1 rowspan=1 > Morioka </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Shiwa Castle Site </td><td colspan=1 rowspan=1 > 39°41′08″N 141°06′22″E / 39.68555267°N 141.10624036°E </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > 167 </td></tr>
<tr> <td colspan=1 rowspan=1 > Morioka Castle Site 盛岡城跡 Morioka-jō ato </td><td colspan=1 rowspan=1 > Morioka </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Morioka Castle Site </td><td colspan=1 rowspan=1 > 39°42′02″N 141°09′04″E / 39.70066353°N 141.15108067°E </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > 141 </td></tr>
<tr> <td colspan=1 rowspan=1 > Ōsuzukami Site 大清水上遺跡 Ōsuzukami iseki </td><td colspan=1 rowspan=1 > Ōshū </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°06′47″N 140°57′14″E / 39.11310698°N 140.95390454°E </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 00003597 </td></tr>
<tr> <td colspan=1 rowspan=1 > Ōhora Shell Mound 大洞貝塚 Ōhora kaizuka </td><td colspan=1 rowspan=1 > Ōfunato </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°04′01″N 141°44′40″E / 39.06681149°N 141.74457859°E </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 3299 </td></tr>
<tr> <td colspan=1 rowspan=1 > Takonoura Shell Mound 蛸ノ浦貝塚 Takonoura kaizuka </td><td colspan=1 rowspan=1 > Ōfunato </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°02′08″N 141°44′23″E / 39.0356528°N 141.7398608°E </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 130 </td></tr>
<tr> <td colspan=1 rowspan=1 > Takkoku-no-Iwaya 達谷窟 Takkoku-no-Iwaya </td><td colspan=1 rowspan=1 > Hiraizumi </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Takkoku-no-Iwaya </td><td colspan=1 rowspan=1 > 38°58′08″N 141°03′29″E / 38.96901282°N 141.0581363°E </td><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > 3414 </td></tr>
<tr> <td colspan=1 rowspan=1 > Isawa Castle Site 胆沢城跡 Isawa-jō ato </td><td colspan=1 rowspan=1 > Ōshū </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°10′51″N 141°08′07″E / 39.18075357°N 141.13514156°E </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > 118 </td></tr>
<tr> <td colspan=1 rowspan=1 > Nakazawahama Shell Mound 中沢浜貝塚 Nakazawahama kaizuka </td><td colspan=1 rowspan=1 > Rikuzentakata </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 38°57′16″N 141°41′39″E / 38.95441924°N 141.69403949°E </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 131 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Tokutan Castle Site 徳丹城跡 Tokutan-jō ato </td><td colspan=1 rowspan=1 > Yahaba </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°36′28″N 141°10′21″E / 39.60777681°N 141.17236734°E </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > 159 </td></tr>
<tr> <td colspan=1 rowspan=1 > Nanbu-Date border mounds 南部領伊達領境塚 Nanbu-ryō Date-ryō </td><td colspan=1 rowspan=1 > Kitakami, Kanegasaki </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°15′53″N 141°03′03″E / 39.26466287°N 141.05074033°E </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > 3252 </td></tr>
<tr> <td colspan=1 rowspan=1 > Hatten Site 八天遺跡 Hatten iseki </td><td colspan=1 rowspan=1 > Kitakami </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°19′44″N 141°09′26″E / 39.32894584°N 141.15726166°E </td><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 164 </td></tr>
<tr> <td colspan=1 rowspan=1 > Yanagi-no-Gosho and Sites of Hiraizumi 柳之御所・平泉遺跡群 Yanagi-no-Gosho - Hiraizumi iseki-gun </td><td colspan=1 rowspan=1 > Hiraizumi, Ōshū </td><td colspan=1 rowspan=1 > designation includes the sites in Ōshū of Chōjagahara Haiji (長者ヶ原廃寺跡) and Shirotori-tate (白鳥舘遺跡), which formed part of the original 2006 World Heritage nomination of "Hiraizumi - Cultural Landscape Associated with Pure Land Buddhist Cosmology" </td><td colspan=1 rowspan=1 > Yanagi-no-Gosho </td><td colspan=1 rowspan=1 > 38°59′37″N 141°07′09″E / 38.993611°N 141.119167°E </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > 164 </td></tr>
<tr> <td colspan=1 rowspan=1 > Tonomi Palisade Site 鳥海柵跡 Tonomi-no-saku iseki </td><td colspan=1 rowspan=1 > Kanegasaki </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 39°11′17″N 141°06′42″E / 39.187978°N 141.111724°E </td><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > [1] </td></tr>
</table>
Question:
What is the Tokutan Castle site?
Answer:
Tokutan Castle site was proclaimed a National Historic Site of Japan.