Papoak cave itself was interesting, but narrow and not very long. I was kind of led to believe the guide was included in the 10 000K fee, but no. Afterwards he asked for 100 000. The torch he provided was good though. I had only 50 000K note and they didn't have the change, so we agreed one of them would go and change the bill for smaller and pay me 40 000 on my way out. Later I found out they payed me one 20 000K and two 1000K notes back. Being very low cave it consumed a lot of energy especially from thighs, so when I did Phu Kham cave my legs were already shaking. So if you are not in top condition, skip this one and go to Phu Kham instead, where you can have food and a swim in the lagoon.