The fare is 42 lira. The underground city is a refuge for ethnic and religious people. Thousands of Christians were hiding there during the early religious persecutions of the Byzantine Empire and later Arab invasions. This underground city is large in scale, with a total of 1,200 small stone houses, which can live in 10,000 people. It has 8 floors up and down, and its winding corridors are low and narrow. People need to bend over to walk in such corridors and stone houses, as if they have entered the ant nest.