Nisyros volcano, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe

nisyros volcano nisyros island dodecanese islands greece europe volcanic landscape geothermal activity colorful terrain natural beauty mountain scenery geology travel exploration tourism hiking diverse colors rock formations earth tones unique landscapes volcanic eruption natural wonders island nature outdoor adventures scenic views serene environment natural history geological features structural geology vibrant colors eco tourism culture hot springs crustal activity breathtaking sights formation nature lovers summer travel volcanic soil historical island island geology volcanic islands hiking trails geological diversity regional geology ancient formations rock layers geothermal features scenic landscape