From A Wiki of Ice and Fire
Rathylar is a ruined city in Essos in the Dothraki sea, in the Kingdom of Sarnor. It was located near where the Sarne turned north. As Saath is the only Sarnori city to have survived the Century of Blood, Rathylar was presumably destroyed by the Dothraki as well.
- ↑ The World of Ice & Fire, Beyond the Free Cities: The Grasslands.