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Unsolved case · 1879

Skeleton Canyon massacres

UNSOLVED
Updated
Updated Jul 14, 2026
Cochise County 1881Cochise County 1881Credit: Rand, McNally and CompanyPublic domainSource

The short answer

Skeleton Canyon massacres in brief

In 1879 and again in 1881, groups of Mexican nationals — first a detachment of Rurales, then civilians transporting silver — were ambushed and killed in Skeleton Canyon on the Arizona–New Mexico border, allegedly by members of the Cochise County Cowboys outlaw gang.

Key facts

Year
1879
Place
Skeleton Canyon, Peloncillo Mountains, Hidalgo County (Arizona–New Mexico border)
Status
UNSOLVEDUnsolved
Outcome
No conviction on file

The coverage index

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The case file

What happened

The Skeleton Canyon massacres refer to two separate lethal attacks on Mexican citizens that took place in 1879 and 1881 in Skeleton Canyon, located in the Peloncillo Mountains of Hidalgo County, on the border between present-day Arizona and New Mexico. The canyon links the Animas Valley of New Mexico with the San Simon Valley of Arizona.

The first attack occurred in July 1879. Cattle rustlers had assaulted a rancho in northern Sonora, Mexico, killing several inhabitants. Survivors reported the attack to Commandant Francisco Neri, who dispatched a detachment of Mexican Rurales, including Captain Alfredo Carrillo, to pursue the attackers. The Rurales crossed the international border into Arizona, and as they entered Skeleton Canyon, they came under fire. Of the large group that had crossed, only three Rurales survived. The Mexican government did not take further action but lodged a protest over the killings with U.S. President Chester Arthur, while acknowledging that its own policemen had crossed into Arizona territory. Johnny Ringo, associated with an outlaw group known as the Cochise County Cowboys — cattle rustlers and bandits operating in the region — claimed to have been present at the ambush. Ringo stated that other participants included "Old Man" Clanton, brothers Ike and Billy Clanton, "Curly Bill" Brocius, Florentino Cruz, and brothers Frank and Tom McLaury.

A second, related attack occurred in July 1881. Curly Bill Brocius learned that a group of Mexicans carrying silver were traveling through Skeleton Canyon toward Arizona. Brocius and roughly twenty other men, including Johnny Ringo and Jim Crane, ambushed the group, killing four people and stealing approximately $4,000 in bullion along with livestock. Two months after surviving victims reported this attack, Commandant Neri again sent Rurales, once more led by Captain Carrillo, across the border. This time the Rurales successfully ambushed the outlaw group, killing five men, including Old Man Clanton and Jim Crane, in a confrontation that became known as the Guadalupe Canyon Massacre.

The events have since been referenced in popular culture, including a 1958 episode of the television series Tombstone Territory depicting the 1881 attack, and a 1961 episode of The Life and Legend of Wyatt Earp titled "Requiem for Old Man Clanton," which references the Skeleton Canyon killings leading into the Guadalupe Canyon events.

4 dated entries · 1879–1881

Timeline

  1. Rustlers attack a rancho in northern Sonora, Mexico, killing several inhabitants; survivors report the attack to Commandant Francisco Neri.

  2. A detachment of Mexican Rurales led by Captain Alfredo Carrillo crosses into Arizona pursuing the attackers and is ambushed in Skeleton Canyon; only three Rurales survive.

  3. Curly Bill Brocius and roughly twenty other men ambush a group of Mexicans carrying silver through Skeleton Canyon, killing four and stealing bullion and livestock.

  4. Roughly two months after the attack is reported, Rurales under Captain Carrillo again cross into Arizona and ambush the outlaw group, killing five including Old Man Clanton and Jim Crane, in what became known as the Guadalupe Canyon Massacre.

2 named in this file

People

Victims first. Every legal label is set from public records and court outcomes, not from the prose.

  • Alfredo Carrillo

    LAW ENFORCEMENT

    Captain leading Mexican Rurales detachments during both the 1879 pursuit into Skeleton Canyon and the 1881 retaliatory ambush at Guadalupe Canyon.[3]

  • Francisco Neri

    LAW ENFORCEMENT

    Commandant who dispatched Rurales detachments in response to attacks on Mexican citizens in 1879 and 1881.[3]

3 cited

Sources

Coverage is not a source: every fact in this file rests on the records below.

  • 2 Press
  • 1 Encyclopedic
  1. Contemporaneous coverage — westernoutlaw.com

    Presswesternoutlaw.comAccessed Jul 7, 2026

  2. Contemporaneous coverage — truewestmagazine.com

    Presstruewestmagazine.comAccessed Jul 7, 2026

  3. Skeleton Canyon massacres

    EncyclopedicWikipediaAccessed Jul 7, 2026

Trust

Record history

First published
Jul 7, 2026
Corrections
None

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