Major river that flows from the Felster Lake in Ralios through the Sodal into Seshnela.
- At the confluence of the Nidan and Deu Rivers, the Tanier turns southwards.
- Before the Luathan Quake, it flowed into the sea near Gerlantsket.
- In the Modern Age, it enters the sea near Noloswal.
- Along it lies Kustria, Segurane, Arnlor, the Tanewal and Basmol City ruins, Estau and Noloswal.
- The Kustrians collect tolls at Heswal
Sources: Middle Sea Empire (Book), Guide to Glorantha