Skeleton Canyon Massacres
1879 CE.
Shown on the map at 31.590°, -109.036°.
These events should not be confused with the Skeleton Canyon Shootout in 1896. The Skeleton Canyon massacres refer to two separate attacks on Mexican citizens in 1879 and 1881. Skeleton Canyon is located in the Peloncillo Mountains (Hidalgo County), which straddles the modern Arizona and New Mexico state line border. This canyon connects the Animas Valley of New Mexico with the San Simon Valley of Arizona.
Text from the Wikipedia article Skeleton Canyon massacres, licensed CC BY-SA 4.0.