The island of Nisyros (in Greece) is a dormant volcano, which means that it hasn't had an eruption for a very long time but it will probably have in the future and this is Nikia, a well preserved picturesque village, hanging above Stefanos, one of the biggest, most impressive and best preserved hydrothermal craters in the world!
My post about Nisyros island is here.
Awesome shot. The city looks so tiny.