Sakura Dote Kofun (桜土手古墳) is one of the largest Kofu spot in Kanagawa Prefecture located in Hadano city. There are 35 Kofun around the riverside of Minashi River in Hadano city, and 6 of them are located in this place. They were constructed in late 7th century. There is a museum that displays many relics that discovered in this Kofun. Also, there is complete restructred Kofun that you can also enther the inside of Kofun.
Tourist Info.
There are parking and restroom.
The museum:
Time: 9:00 to 17:00 (Last entry 16:30)
Admission: Free
Close: Monday and the next day of holiday.
Access
0. at Odawara Station.
1. use Odakyu Line to Shibusawa Station.
2. walk (20 min.)
30 min
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映画好き集まれ！ 
Sakura Dote Kofun is a historic site of Kanagawa Prefecture. Kofun is the mausoleum in ancient Japan (3rd to 7th century).
There are 6 Kofun that preserved in the original condition and one complete restored Kofun that has the original structure of Kofun with inside chamber made from large stones.
The museum displays many earthen vessels that discovered in this site.