Now you see them, now you don't - the cave which swallows you up
It sounds strange, but there's a place in Brazil with rocks that can swallow you up.
Tourists are flocking to "Swallow Rock", a small waterfall above a river in Trindade, about 270km south of Rio de Janeiro.
You squeeze yourself between the rock formations and before you know it, you disappear below,
Once inside the cave there is only one way to go, down the slippery surface until you are spat out into the river below.
Various reviewers on Google have called it "beautiful", "scary", and "wonderful", with one warning not to bump your head on the way into the cave.