Crater Lake is located in southern Oregon in the USA, and is well-known as the deepest lake in the United States.
Its depth stretches down to 592 metres (1,943 feet), according to the US National Park Service, making it one of the deepest lakes in the world.
More Earth from space
As can be seen from these images showing what Crater Lake looks like from space, it really is a natural wonder.
Beyond its beauty, the lake offers scientists a glimpse into Earth’s volcanic past and natural ecosystems.
Crater Lake from space
Given its historic and geological significance, it's unsurprising that there are more than a few images of Crater Lake from space.
It's a favoured target for astronauts armed with cameras on board the International Space Station.
And images of the lake have been created using data captured by Earth-orbiting satellites like the Landsat spacecraft.
How Crater Lake formed
Crater Lake formed in the caldera of Mount Mazama.
About 7,700 years ago, an eruption from volcanic Mount Mazama formed the basin that eventually became Crater Lake.
Activity then continued in the region hundreds of years after this major eruption, and geologists have found evidence of this in ancient volcanic rocks, lava flows and domes beneath the surface.
The story behind its formation is why, unlike most large lakes, Crater Lake has no inlets or outlets to feed it with water.
Its water is sustained through rain, and is then lost through evaporation and seepage.
The Old Man of the Lake
One of the most famous features of Crater Lake is the 'Old Man of the Lake', a 30-foot-long hemlock log that has been floating vertically in the lake for well over a century.
It was first documented in 1896 by lake geologist Joseph Diller, and has drifted around the lake ever since, poking above the surface and becoming a famous natural phenomenon.
Fish in Crater Lake?
The National Park Service says there's no evidence that there were ever native fish present in Crater Lake.
Between 1888 and 1941 the lake was stocked with seven different species, but scientists say only two of those species thrive today.
These are kokanee salmon and rainbow trout.
