The Tanagawa-dake is situated at the border between the Gunma and Niigata Prefectures within the Joshin'etsukogen National Park. The mountain has three summits known as Toma-no-mimi (1'963 m), Oki-no-mimi (1'977 m) and the Ichinokura-dake (1'976 m).
It is one of the 100 famous Japenese mountains.
Under this mountain, important and long tunnels connect the Pacific side and the Sea of Japan side:
Oo-Shimizu Tunnel: for Joetsu-Shinkansen, 22.1 km
Shin-Shimizu Tunnel: for JR Joetsu Line toward Niigata, 13.5 km
Shimizu Tunnel: for JR Joetsu Line toward Tokyo, 9.7 km
Kan-etsu Tunnel: for Kan-etsu Expressway, 11.1 km
Japan 1954, Tanigawa-dake.
The stamp was issued perforated in sheets of 20 stamps and imperforated in the miniaturesheet
Joshin'etsukogen National Park.
Opening of the Kan-etsu Tunnel (11.1 km) under the Tanigawa-dake.
Japan 2002, Tanigawa-dake.
Japan 2006, "Mountains of Echigo-Yuzawa".
Echigo-Yuzawa is a hot spring resort situated in the north-west of the Taniwaga-dake. The formal name of the town is Yuzawa, and "Echigo" is the old name of Niigata Prefecture. (In Japan there are many places named "Yuzawa" and most of them have hot springs. So "Echigo" is added to the town name to distinguish.
Japan 2011, Ichinokura-dake (summit of the Tanigawa)
The summit in the foreground is the Ichinokura-dake 1'977 m, the highest point of the Tanigawa-dake.
The stamp was issued in the sheet "Japanese Mountains Series No 1".