proper noun/sɔ.le.daʁ/
Soledar (a city in Bakhmut Raion, Donetsk Oblast, in eastern Ukraine, containing an extensive salt mine)
Synonyms: Bryantsevka (17th century-1924), Karlo-Libknekhtivsk (1924-1991), Karlo-Libknekhtovsk (1924-1991)
From Ukrainian Соледа́р (Soledár, literally “gift of the salt”).