When entering Turkey some countries are required to have a visa, which is
valid for 90 days. You can easily get your Visa online by using link below
https://www.evisa.gov.tr/en/apply
More then 12 million years back Cappadocia was filled with lavas and ashes by the volcanic eruptions . And then with the help of the rain and the wind erosion process started in Cappadocia , while the softer parts goes away strongest rock formations are remaining . That’s how we got all these diffirent shaped rock formations .