最大幅550ｍ、長さほぼ1ｋｍにわたる上富田町内最大の段丘です。5つの開析谷が確認でき、地形を利用した溜池と天保４年にひかれた6ｋｍの水路があり、今も灌漑に利用されています。段丘面上では水田や、果樹栽培がおこなわれています。
It is the largest terrace in Kamitonda Town with a maximum width of 550m and a length of almost 1km. Five dissected valleys can be confirmed, and there is a reservoir using the topography and a 6km waterway drawn in the 4th year of Tenpo, which is still used for irrigation. Paddy fields and fruit trees are cultivated on the terraces.
google翻訳
うえもり う 
2022/01/19(Wed) 21:12 市ノ瀬の富田川の河床には、暴れ川と呼ばれた富田川の約450年前の河川改修の跡が見られます。
On the riverbed of the Tonda River in Ichinose, you can see the traces of the river improvement of the Tonda River, which was called the Rampage River, about 450 years ago.
google翻訳
かつての熊野詣では富田川対岸の稲葉根王子で馬を捨て、最初に川を渡るのが一ノ瀬であったといわれています。水垢離場として重んじられ、熊野に入るためのみそぎの場所でした。富田川が狭まるところにあり、川から山を少し上った小高い位置にあります。
It is said that in the former Kumano region, Prince Inabane on the opposite bank of the Tonda River abandoned his horse and was the first to cross the river. It was valued as a place to get rid of water stains, and it was a place for shaving to enter Kumano. It is located in a narrow area of the Tonda River, and is located a little higher than the river.
google翻訳
上富田町の富田川はあまり蛇行せず活断層帯の低地を流れます。右岸にある下鮎川には、小規模ながら典型的な河岸段丘が見られます。この河岸段丘は3段あり、もっとも広く発達する標高約65ｍにある2段目の段丘面には、耕地として利用され「平」や「畑」の字をもつ地名が多いです。
The Tonda River in Kamitonda Town does not meander very much and flows through the lowlands of the active fault zone. The Shimoayukawa on the right bank has a small but typical river terrace. This river terrace has three steps, and on the second terrace surface, which is the most widely developed terrace at an altitude of about 65 m, there are many place names that are used as cultivated land and have the characters "hira" and "field".
google翻訳
前弧海盆に堆積した田辺層群の上部層が広大な波食棚に露出し志原の千畳敷として有名です。砂岩と泥岩の折り重なった砂岩泥岩互層が分布し海食崖・海食洞・波食棚などの海岸地形が発達します。地層には生痕化石が多く見られます。海岸南側の村島磯は田辺層群の下部層の傾斜した地層が観察できます。
Mudstone in the lower layer invades the upper layer of the Tanabe Group deposited in the forearc basin to form a mud diapir. The columnar intrusive rock that was once liquefied deep underground due to an earthquake and cut into the upper stratum is called mud diapir. When it erupts on the seabed or the surface of the earth, it becomes a mud volcano. This world's mud volcano is known for Kumano Nada (seabed) and Niikappu, Hokkaido (land).
google翻訳
前弧海盆に堆積した田辺層群の上部層に下部層の泥岩が貫入し泥ダイアピルを形成しています。かつて地震などをきっかけに、地下深くの泥が液状化し、上の地層の中に割り込んでできた円柱状貫入岩体を泥ダイアピルといいます。これが海底や地表に噴出すると泥火山になります。現世の泥火山は、熊野灘（海底）、北海道新冠（陸上）で知られています。
Mudstone in the lower layer invades the upper layer of the Tanabe Group deposited in the forearc basin to form a mud diapir. The columnar intrusive rock that was once liquefied deep underground due to an earthquake and cut into the upper stratum is called mud diapir. When it erupts on the seabed or the surface of the earth, it becomes a mud volcano. This world's mud volcano is known for Kumano Nada (seabed) and Niikappu, Hokkaido (land).
Google翻訳