The incredible natural phenomenon Pedra que Engole – a rock formation above a river in Trinidade, south of Rio de Janeiro – has tourists queuing up to experience it.
But terrifying footage of a brave adventurer trying to squeeze through the rocks may just put travellers off for life.
In a clip that has gone viral online after being shared on Reddit recently, one bikini babe squeezes her body through a tiny hole into a cave beneath the waterfall.
Her body disappears beneath the pummelling water.
There is surely no way anybody could survive being sucked underwater between the tiny crevice.
From the outside, tourists are swallowed up inside the cave – but what happens inside has been described as incredible by survivors.
The cave opens up into a natural water slide that takes daredevils down into the river below.
It quickly becomes clear where the Pedra que Engole got its name, as it loosely translates to Swallow Rock.
The hike back up to the top of the waterfall takes around 20 minutes to complete.
Though fraught with danger, the attraction is increasingly popular with tourists from all over the world.
One reviewer wrote on TripAdvisor: “It’s awesome. It just literally swallows you and then you swim underneath this big rock until you make it out the other side. Did it twice.”
YOUTUBESURVIVOR: The woman is all smiles when her adventure has ended
And it's not the only daredevil tourist attraction thrilling globetrotters.
A hidden waterslide buried deep in the Hawaiian jungle has been drawing massive crowds.
But there’s one catch – the 10-metre long slide is illegal and adventurers who find it in Waipio Valley risk a hefty fine by riding it.