It will take from you around 270 stairs step to reach the main cave.
Be aware of Monkeys, if you don't do anything to them they will not, don't try to touch them or feed them, as if they see food in your hands they will come to you (many) and you may get terrified, if you forget and this come true just through the food away from you so they didn't interact with you directly.
One of them bite my daughter hand as she was trying to touch him as she used to touch the cats.