Turkey was affected by volcanism in the past.Great Ararat and Small Ararat in Eastern Turkey.
How natural ‘chimneys’ formed in Cappadocia:
1.Ash and debris (tuff) and lava were thrown out during an eruption.
2.The soft tuff disappeared at many places because of erosion.
3.Lumps of hard lava protected the underlying tuff.
4.Natural pillars formed.