This looks like a Photoshopped image, except that it's not. What you're looking at is a waterfall at Rio Celeste, a river in Costa Rica's Tenorio Volcano National Park.

The water is this rich blue color because of volcanic minerals below the surface. To get to the waterfall, you need to hike for about an hour through a tropical rainforest filled with white-faced monkeys, poison dart frogs, and blue butterflies. I'd say the reward of having a dip in this super blue pool, soak in warm hot springs, or sit in "boiling mud pots" could be encouraging enough to get through those live booby traps.