bubbling mud. mud volcano at sunset - landmark attraction in buzau, romania

active ancient arid attraction barren blue boil boiling bubbling burst buzau clay close closeup color colorful colors cone conical county cracked crater destinations dome drain drainage dream earth erupting eruption europe exploration geological geology landmark landscape lava light lunar mountain mud muddy mudpot natural nature phenomenon pink pool pot rare red relief reserve romania sky structure sun sunlight sunset travel volcano volcanoes water yellow