babele de la ulmet geologic formation of round rocks known as trovanti remains of prehistoric sea bed in romania in buzau c

ancient architecture attraction babele beauty bed bizarre buzau buzioru cement concretion county destinations ellipsoidal environment famous fiction form formation formations geologic geological geology known landscape living luanei mineral natural nature old park place prehistoric remains rock rocks romania round sandstone scenery sculpture sea sediment sedimentary shape shapes spectacular sphere stone stones tourism tourist travel trovant trovanti ulmet unique wonder world