“Fairy chimneys" were formed when lava covering the tuff (consolidated volcanic ash) gave way along preexisting cracks of sloping areas and became isolated pinnacles. They can attain a height of up to forty meters, have conical shapes and consist of caps of harder rock resting on pillars of softer rock.
A "fairy chimney" exists until the neck of the cone erodes and its protective cap falls off. The subsequent disintegration of the remaining pinnacle continues until it is completely leveled down.
