Robat-e Sefid/Bazeh Hur is the name of two modern villages giving the name to a valley located in a strategic geographical point traversed by a main north-south caravan road. Archaeological evidence brought to light the meaning of this valley, in which religious and economic aspects show and testify to development of this region during the Sasanian and early Islamic epochs. They highlight its role as a stopover for caravans in the past as today.
Rante, Rocco, & Labbaf-Khaniki, Meysem. (2021). A Religious and Economic Stopover in the Middle of Khorasan-e Razavi. Journal of Material Cultures in the Muslim World, Volume 2 (Issue 1-2), 184-199. https://doi.org/10.1163/26666286-12340021