The Last Jedi filmed at Salar de Uyuni, Uyuni. The stark salt plains here stand in for the planet Crait, the setting of a closing battle between the rebels and the First Order. On screen it's Crait.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer. This is an area, not a spot. The coordinate is its middle, so use it to navigate to the place and not to line up a shot.
Planning the trip? everything filmed in Uyuni is on one page
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Uyuni and it tells you what was shot around you, how to get there, and whether you can actually go in.
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