38 km from Balkanabat near Tasharvat water spring are located the picturesque ruins of caravan serai Tasharvat . It stands on one of the ancient caravan routes - numerous branch es of the Great Silk Road . The building of the caravan serai is a rectangular fortification with a stone wall with the ruins of a residential building inside. Near the caravan serai there was a n elm grove of 100 trees. The first mentions of Tasharvat were found in 1871-1872 . The scientists believe that the building was still inhabited in the end of the 19th century.