...the outskirts of an attractive village of Borov Dol, 35km from Sliven and 24km from Tvarditsa. ...35km from Sliven and 24km from Tvarditsa. Borov Dol Sliven properties ...Borov Dol, 35km from Sliven and 24km from Tvarditsa. Borov Dol Sliven properties ...attractive village of Borov Dol, 35km from Sliven and 24km from Tvarditsa. Borov Dol ... and 24km from Tvarditsa. Borov Dol Sliven properties