Previous month I was on a walk in Asparuhovo park, when I saw a small, circle-shaped fence. It turned-out, that inthere is located some endangered kind of plant (Convolvulus persicus). Part ot it's population has been moved to the beach of Asparuhovo in order to be saved and preserved. A clever idea, don't you think? It's original location is near Durankulak lake, according to the information from the signborad.
Images source: My phone