Growing olives in Croatia is mainly characteristic for the coastal area and islands and for the interior of some parts of Istria, area near Benkovac, Drnis, Sinj and Vrgorac and is divided into six regions: Istria, Kvarner, North Dalmatia, Central Dalmatia, Istria and Dalmatia hinterland. Pruning of olive trees represents a demanding and responsible measure which forms growth shape and creates a balance between crop and new vegetation growth. Moreover, it rejuvenates an old tree and provides its better state of health. Namely, not so long ago, majority of trees grew freely without being trained to certain form. Consequently, the process of pruning, protection, and especially harvesting – where one needed to use ladders – could not be easily performed. Revitalization can be defined as a process where old tree is being revitalized in order to improve its growth and yield. The process of regeneration can be done in many ways depending on different factors. Furthermore, there are hundreds of thousand olive trees on the island of Ugljan. Moreover, particularly in the cove of Muline there can be found the remains of old mill oil whose origin is from ancient times. Finally, this is only one of the evidences of a long tradition of olive growing and oil production on the island of Ugljan.