Ta Pan Cave is extremely brutal. Tour of heaven and hell. Learn about sins, virtues, and demerits. Simple Buddhist principles about karma: what you do is what you get. I was reminded of Wat Pai Rong Ngua in Suphan Buri a little when I saw the stucco sculptures at Ta Pan Cave or Wat Tham Ta Pan, which are thought-provoking riddles about karma, hell, and heaven.
Tapan Cave is a tourist attraction in Phang Nga town. It is not too far away. You can walk there slowly. Phang Nga town is the district with the most caves in Thailand (Phung Chang Cave, Sam Cave). You dont have to go into the caves. You can just walk around and take pictures with the scary Thai hell scene.
After going through the brutal hell, if you want to see heaven, you can walk across the Dragon Bridge (very long) to heaven. You can walk around and take pictures and almost reach enlightenment because the images of hell are really scary. Be a good person and dont do anything bad.
In terms of art, it is the work of local craftsmen, made as a moral teaching, reflecting religious beliefs that people nowadays tend to overlook.
