The pool in question is called "The Mountain" and it cost US$2 million (NZ$3.17 million) to construct.
This man-made aquatic paradise in Springville, Utah, has a grand total of five waterfalls.
Here you can not only swim and jump off the mountain top (with a backflip, if you're game) but you can also scuba dive, scoot down a water slide or cook a quality meal for your pals.
The hidden water slide measures 18 metres long and winds through the inside of the mountain before it spits you out through one of the waterfalls.
Inside the mountain, among the spiderweb of secret tunnels, is a kitchen with granite benchtops, an eight-burner grill and a mini fridge.
The pool was originally built for the owners to practise scuba diving, meaning you have to put on a wetsuit and oxygen tank to touch the bottom, eight metres below.
The mountain is crafted from reed bar, metal beams and several tonnes of concrete all painted to look like the real thing.
Encircling the 43 metre by 18 metre pool, which holds more than 1 million litres of water, is a 100-metre lazy river propelled by jets.
Atop the massive boulder are bridges, pathways and steps that lead to the waterslide and give views of the pool in all its glory
The pool was featured on an episode of Animal Planet's The Pool Master this month and you can watch the video below: