Kofun of Emperor Keiko（景行天皇陵）is located in Tenri Nara. It is also known as Shibutanimukouyama Kofun (渋谷向山古墳). Emperor Keiko is the 12th Emperor of Japan. It is 310m long and 23m tall front circle back square Kofun located in Nara. It is the 7th largest Kofun and constructed in late 4th century.
Tourist Info.
There is parking but no restroom.
DO NOT Enter the Kofun.
Access
0. at Nara Station.
1. use JR Sakurai Line to Makimuku Station.
2. walk east (20 min.)
20 min
New Wave Samurai Movie. 
映画好き集まれ！ 
Shibutanimukouyama Kofun is Front-Square-Back-Circle located in Tenri, Nara.
The size:
Total length is 310m and 23m tall. Front Square is 170m long and back circle is 168m diameter.
Emperor Keiko
Emperor Keiko is the 12the Emperor of Japan. He is one of the emperor that travled Kyusyu to put them under the control of the imperial court. He also ordered his son Yamatotakerunomikoto to conquer Kyusyu and Tohoku.