Are they the horsewomen of the apocalypse?

A California woman was left shaken after discovering the eerie source of some “apocalyptic” sounds she heard on Mount Shasta. They detailed these anomalous finds in a series of videos going viral on Facebook.

Karrie Ann Snure and her daughter Jordan had been horseback riding in the area when they heard a creepy screeching noise blaring throughout the trees.

Curious, the pair investigated and went off the path and into some nearby brush, whereupon they found a patch of solar-powered Bluetooth speakers jutting up from the dirt.

“This is straight apocalyptic,” Snure declared. “Someone is summoning something here.”

After venturing up the mountain, the duo found veritable fields of these sinister-looking sound emitters arrayed about the trees.

The majority of the speakers — which Snure deduced were solar-powered — were blasting “white noise” although several played a recording of a sermon that mentioned “salvation,” she said.

“I think it sounds like white noise because they’re all playing the same thing, but when combined together and not properly synced it just sounds like static,” the content creator theorized in a follow-up clip. “The ones that were placed by themselves, you could make out a human voice coming out of them, repeating a mantra.”

All told, there were between 100 and 200 of the high-altitude loudspeakers, although their purpose remains unclear.

“There wasn’t any houses anywhere close by within miles, and nothing to want to ward off anything from so I guess this was definitely a summoning of some kind,” said Snure while discussing the “strange experience.”

She theorized that it could be a “Lemurian beacon system,” referring to a new age legend that claims that Mount Shasta houses a subterranean city inhabited by the descendants of a lost continent known as Lemuria.

According to the lore, a network of tunnels beneath the Golden State’s fifth-largest peak reportedly leads to their citadel, known as Telos.

Legend has it that the Lemurians are technologically superior, capable of interdimensional travel, and can even contact extraterrestrials.

Coincidentally, the volcano has been associated with supernatural phenomena, in addition to the Lumerians, entail everything from Native American deities to Sasquatch and even UFOs, according to Atlas Obscura.

Viewers had their own theories as to the identity of the mountain music makers.

“They[‘re] trying to entice Big Foot into their camp….” said one, while others speculated it could be some sort of “cult activity” or “wolf deterrent.”

“The famous Mt Shasta witches are summoning demons,” posited one commenter.

Some even theorized that the alpine noise machines were a form of defense system used by illicit marijuana farmers in the area.

Gadget provenance notwithstanding, many viewers were perturbed that someone would litter the scenic nature spot with electronics.

However, during a followup investigation of the area, Snure confirmed on her OnX maps that “the installation is on private property adjacent to the California Government Lands.”

“I still have absolutely no idea who put them there or why,” she wrote, “but at least now we know the mountain wasn’t trying to summon us.

“Welcome to another perfectly normal day around Mount Shasta.”