Earth Sandwich / City antipodes / Xi’an
Antipode finder · China
The antipode of
Xi’an.
Draw a straight line from Xi’an (34.26° N, 108.93° E) through the centre of the Earth and it comes out at 34.26° S, 71.07° W, on dry land in Chile, 4 km from Coltauco. An exact Earth sandwich is possible.
- Xi’an
- 34.26° N, 108.93° E · about 360 m above sea level · 9,600,000 people
- Antipode
- 34.26° S, 71.07° W
- What is there
- Dry land in Chile
- Nearest town
- Coltauco, Chile · 4 km from the antipode
- Nearest big city
- Santiago · 97 km from the antipode
- Sandwich verdict
- EXACT land lies opposite land
- Elevation bonus
- +800 m (360 m here, 440 m there)
Can you make an Earth sandwich from Xi’an?
Yes: an exact Earth sandwich. Xi’an is one of the few large cities with dry land directly opposite it. The grid that verifies submissions rates the spot exact: put a slice down in Xi’an and have a friend put one down 4 km from Coltauco, Chile at the same UTC minute, and the whole planet is the filling. The elevation bonus would be about 800 m: Xi’an sits about 360 m above sea level and the other slice about 440 m above sea level.
Xi’an is on the China & Mongolia ↔ Argentina & Chile corridor. Its guide lists where every city on both sides lands and how to make an Earth sandwich there.
How this was worked out: the antipode flips the latitude and moves the longitude by 180°. Land or sea comes from the OpenStreetMap coastline the map uses; the sandwich verdict and elevations come from the verifier's 0.2° grid (Natural Earth land, ETOPO 2022 relief); water names from Natural Earth; towns and populations from GeoNames. The city's position is GeoNames' point for it; a big city's suburbs spread tens of kilometres around that point, and the figures move with them. Generated 2026-09-29.