Sediment from the Sendai River at the Sea of Japan forms the Tottori Sand Dunes .
The mouth of the Sendai River is in the Karo district of the city of Tottori , where it empties into the Japan Sea .
Sediment from the Sendai River at the Japan Sea     forms the Tottori Sand Dunes .
The mouth of the Sendai River is in the Karo district of the city of Tottori , where it empties into the Japan Sea .