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You should try spelunking in my country, brehs. Here in the Philippines, no one gives a shit. You can literally get a "tour guide" to take you through an advanced cave route with no safety measures at all for a mere fee of 8 bucks a head. He has a gas lamp at least.
You slip through holes as big as your body, cross this slippery bridges, and if you fall, you will die and will most likely be stuck there forever. But the experience is absolutely amazing.
If you're claustrophobic though, don't bother because it's everything you think it will be and more.