What is "rogoi"

Rogoi is a Byzantine castle in Nea Kerasounta near Preveza, in western Greece. It is located on the site of the ancient city of Bouchetion , which was abandoned in the late 1st century BC. Re-occupied in the 9th century, it became a bishopric and was refortified, playing an important role in the region's history in the 14th and early 15th centuries. It was abandoned again after the Ottoman conquest in 1449.