Escape the crowds and winter smog in the city and enjoy the fresh mountain air of vitosha mountain the oldest national park of the balkans climb cherni vruh 2290 m asl the highest peak of the mountain admiring breathtaking panoramas whether you are a summer hill walker or a non skier visiting bulgaria you will be surprised and delighted by how easily you can dive into the tranquility of a winter wonderland within a day trip from sofia led by an expert