As Ichkeria says, it's Bulgarian.
The text at the top left says "Pure natural wines".
The text at the right starts with "Members of the Suhindol Wine Cooperative". (Suhindol is a town in north central Bulgaria). The name of that cooperative is then appended between quotation marks, including the grape name Gamza but the ending is unclear. (i.e. the cooperative was known as 'Gamza-something'). The final sentence reads as Ichkeria has stated, "They drive/transport their grapes on carts".