Kaklik Cave is one of the lesser known places among visitors in Denizli region. Kaklik Cave is usually referred as the Underground Pamukkale and itâ€™s easy to understand why. Kaklik Cave has the same travertine structure as Pamukkale. The difference, however, itâ€™s smaller in size and itâ€™s inside a cave. The cave came to light after the collapse of its roof. After opening to tourists in 2002, Kaklik Cave started to earn visitor traction.