The village of Oslen Krivodol (Vratsa District) is located in North-West Bulgaria and is included in Municipality Mezdra. It situated between wooded hills at 15km from town of Mezdra. The area is famous for its spectacular, pristine nature, natural springs (that supply a large, pure lake high in the mountains above the village), three small mountain rivers and the interesting caves (partly unexplored) in the region. Landmarks of Oslen Krivodol are the medieval church and an unstudied ancient fortress nearby. Transport: Railway station 3.5km away on the Sofia-Varna line and regular buses to Roman and Mezdra.