Lake at Kawah Ijen Volcano

A volcanic lake is not the first thing that comes to mind when looking for an ideal swimming spot. Testing the temperamental waters of the lake in Kawah Ijen volcano in Indonesia is not a good idea. Gases and steam arise from its depths, like smoke coming out of a chimney, which shows that something’s cooking. Hopefully, this won’t be you.

Remember how the Joker dunked himself in a vat full of acid? Who knows if he was aiming to be green or blue? If you are not an evolved creature that can survive alien planets, better give swimming in this lake’s turquoise waters a hard pass.